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Southern Railway
4 SUB

(Nos. 41xx, 42xx, 43xx, 46xx & 47xx)

4 SUB unit no.4672 leaves Holmwood with a Horsham train on 9^th May 1980
^©John Atkinson

4 SUB Electric Multiple Units
(built on New and Recovered Underframes)

Unit nos.4101–4130, 4355–4387, 4277–4299, 4601–4607, 4617-4620 & 4621–4754

The Southern Railway’s existing suburban electric multiple unit fleet was made up of three-car motor units and two-coach trailer sets. To replace these, a ten-year program was drawn up to be implemented from 1939 for a new ‘second generation’ suburban fleet formed of four-car motor units; later known as the 4 SUB units (4-car SUBurban). The plan envisaged the construction of thirty new ‘all-steel’ vehicles in three batches of ten four-car multiple units and fifty-five trailer cars; the latter would be used to augment the electric 3-Car Motor Units built new about fifteen years earlier.

One hundred and twenty-five trailer sets would be withdrawn, one car of each of these sets being on a standard SR 62' 0" underframe, these underframes would be salvaged and used under later vehicles to be built. Later stages would include a further twenty-three completely new units and one hundred and seventy-nine trailers to augment the remaining three-car sets and finally further ‘new’ units would be constructed on underframes recovered from scrapped vehicles.

The final stage saw the withdrawal of the augmented three-car sets, the original vehicles for scrapping, and the ‘all-steel’ trailer to be used with further new motorcoaches to create further completely ‘new’ units. This plan had the advantages of getting large numbers of new trailers into service quickly without the need for new traction equipment. However, the effects of the second world war and later material and staff shortages saw it somewhat modified.

The highly distinctive ‘Bulleid’ profile of 4 SUB unit no.4618 awaiting ‘the road’ at Waterloo on Thursday, 1^st May 1980.

© John Atkinson

All units were built at Eastleigh, those on new SR standard 62' 0" underframes having these fabricated at Lancing. Each unit was close-coupled within, using the standard suburban centre-buffer and three-link chain arrangement: this being bolted with shackles underneath the headstock (keeping the centre-buffer under compression). One corridor trailer had a centre buffer at both ends; the other trailer had a buffer at the one end with a rubbing plate at the other whilst both motorcoaches had rubbing plates.

On cab ends there was the usual central drawhook with side buffers, these being self-contained Spencer-Moulton ‘mainline-style’ buffers (as first used on the 6 PUL units). Besides lighting and control jumpers, there was also a 750v (line voltage) power jumper between units.

All the 4 SUB units could run in multiple with the 2 BIL /2 HAL /2 NOL /2 SL /2 WIM /3-Car Motor Units & 4 LAV units (up to twelve cars) but not with the 4 COR (etc) /5 BEL /6 CITY /6 PAN /6 PUL compatible range of units.

4 SUB vehicles ordered in the following batches

HO 1060	All vehicles for units nos.4101 – 4130 (despite a number of design changes between the three batches of ten units) (120 cars).
HO 1094	Augmentation trailer cars 10346 – 10400. (55 cars) This batch being split as:
	1094A (10346 - 10375), 1094B (10376 - 10390), 1094C (10391 - 10400).
HO 3231	All vehicles for units nos.4355 – 4377 (92 cars)
HO 3351	Augmentation trailer cars 10230 - 10344 (116 cars)
HO 3384	All vehicles for units nos.4378 - 4385 and TS for 4386 & 4387 (34 cars)
HO 3385	MBS and TSO vehicles for units no.4386 & 4387 (6 cars)
HO 3386	Augmentation trailer cars 10167 – 10169 (3 cars)
HO 3463	Augmentation trailer cars 10170 – 10229 (60 cars)
HO 3464	All vehicles for units nos.4277 – 4299 (92 cars)
HO 3504	All vehicles for units nos.4621 – 4655 (140 cars)
HO 3505	All vehicles for units nos.4656 – 4659 (16 cars)
HO 3506	All vehicles for units nos.4660 – 4667 (32 cars)
HO 3617	All ‘new’ vehicles for units nos.4667 - 4709 (129 cars)
HO 3618	MBS vehicles for units nos.4601 - 4607 and one spare (15 cars).
HO 3638	All ‘new’ vehicles for units nos.4710 - 4754 (135 cars).
	Total cars ordered 955.

Details of 4 SUB vehicles ordered were as follows, with number range, units allocated, HO number, underframe LOT number (where known), building date, vehicle type, diagram number and later Southern Region electrical codes allocated in about 1963. Some vehicles survived long enough to be allocated much more complex design codes in a national BR system, these are also shown where applicable.

Vehicle Nos.	Unit Nos.	HO No.	Underframe Lot No.	Date built	Vehicle type	Diag. No	SR Code	BR Code
8616-8653	4735-4753	3638	?	1951	MBTO	2126	CM	EB2650A
8654-8655	4754	6163	?	1951	MBTO	2126	CM	EB2650A
8901-8935	4621-4655	3504	?	1949	10-Comp TT	2013	DN	EH2630A
8936-8939	4656-4659	3505	?	1950	10-Comp TT	2013	DN	EH2630A
8940-8946	4660-4666	3506	?	1950	10-Comp TT	2013	DN	EH2630A
8947-8989	4667-4709	3617	?	1950	TTO	2018	DR	EH2660A
8990-9034	4710-4754	3638	?	1950-1951	TTO	2018	DR	EH2660A
10121-10143	4277-4299	3464	?	1948-1949	TTO	2018	DR	EH2660A
10144-10166	4277-4299	3464	?	1948-1949	10-Comp TT	2013	DN	EH2630A
10167-10169	Augmentation	3386	4796	1948	10-Comp TT	2013	DN	EH2630A
10170-10229	Augmentation^1	3463	4796	1948	10-Comp TT	2013	DN	EH2630A
10190-10229	Augmentation^2	3463	4983	1948	10-Comp TT	2013	DN	EH2630A
10230-10345	Augmentation	3351	4317	1946-1947	10-Comp TT	2013	DN	EH2630A
10346-10400	Augmentation	1094	?	1945-1946	10-Comp TT	2013	DN	EH2630A
10419-10428	4101-4110	1060	7618	1941-1945	10-Comp TT	2012	DG	-
10429-10438	4111-4120	1060	?	1946	10-Comp TT	2014	DK	-
10439-10448	4121-4130	1060	?	1946	(T-T) TT	2015	DM	EH2650A
10449-10471	4355-4377^3	3231	4101	1947	10-Comp TT	2014	DN	-
10472-10481	4378-4387	3384	4983	1948	10-Comp TT	2013	DN	-
10829-10838	4378-4382	3384	4795	1948	MBTO	2126	CK	-
10839-10844	4383-4385	3384	4795	1948	MBTO	2126	CL	-
10845-10848	4386-4387	3385	4795	1948	MBTO	2126	CL	-
10849-10894	4277-4299	3464	4982	1948-1949	MBTO	2126	CM	EB2650A
10895-10940	4355-4377	3231	4100	1947-1948	8-Comp MBT	2119	CH	-
10941-10960	4101-4110	1060	7617	1941-1945	9-Comp MBT	2118	CE	-
10961-10980	4111-4120	1060	?	1946	8-Comp MBT	2119	CF	-
10981-11000	4121-4130	1060	?	1946	(T-T) MBT	2120	CG	-
11301-11370	4621-4655	3504	?	1949	MBTO	2126	CM	EB2650A
11371-11378	4656-4659	3505	?	1950	MBTO	2126	CM	EB2650A
11379-11385	4660-4663	3506	?	1950	MBTO	2126	CM	EB2650A
11386-11392	4663-4666	3506	5430	1950	MBTO	2126	CM	EB2650A
11448-11470	4355-4377^4	3231	4101	1947	9-Comp TT	2314	DP	-
11471-11480	4101-4110	1060	7618	1941-1945	10-Comp TT	2312	DF	-
11481-11500	4111-4130	1060	?	1946	9-Comp TT	2314	DL	-
12351-12358	4377-4385	3384	4983	1948	TTO	2018	DR	EH2660A
12359-12360	4386-4387	3385	?	1948	TTO	2018	DR	EH2660A
12361-12395	4621-4655	3504	?	1949	TTO	2018	DR	EH2660A
12396-12399	4656-4659	3505	?	1950	TTO	2018	DR	EH2660A
12400-12406	4660-4666	3506	?	1950	TTO	2018	DR	EH2660A
12650-12664	4601-4607^5	3618	5809	1950	MBTO	2126	CM	EB2650A
12665-12750	4667-4709	3617	?	1950	MBTO	2126	CM	EB2650A
12751-12800	4710-4734	3638	?	1950-1951	MBTO	2126	CM	EB2650A

Footnotes
1	Four used in units no.4365 - 4368.
2	Nineteen used in units no.4355 - 4364.
3	Fourteen used for augmentation, one vehicle (10463) experimental ‘saloon’ diagram 2018, code DR.
4	Nine used for augmentation.
5	One spare, used in pre-war unit no.4590.

On the heavily-canted Up Slow Line at Clapham Junction, unit no.4620 leans away from platform 10 whilst en-route to Waterloo from Chessington South (Thursday, 24^th April 1980)

© John Atkinson

Summary Table
Years verses Unit numbers

Year	Unit nos.
1941-1945	4101-4110
1946	4111-4120
1946	4121-4130
1947	4355-4377
1948	4378-4387
1948-1949	4277-4299
1949	4621-4655
1950	4656-4659
1950	4660-4666
1950	4601-4607
1950	4667-4709
1950-1951	4710-4754
1951	4735-4754
1969	4131 & 4132

4 SUB unit no.4103 at Surbiton; the composite trailer being the second coach. Note the extra compartment in each car, canvas roofs with curved rainstrips above the motorman’s & guard’s doors. Livery is early BR Green with ‘unicycling Lion’ crests.

The nearest motorcoach (10946) was written off in a collision with 4 EPB no.5115 at Norwood Junction on New Year’s Eve 1968 and replaced by a 2 HAL motorcoach.

© Chris Wilson collection

Prototype Units Nos.4101 – 4110
(‘Shebas’)

The prototype ‘second generation’ suburban unit appeared in September 1941. It was a four-car all‑compartment unit built at Eastleigh works on Lancing underframes to a new style with much welding and curved bodysides so that each compartment could seat six‑a‑side. The unit was numbered 4101 and comprised two 9-compartment motor brake thirds seating one-hundred & eight, a trailer third with 11- compartments seating one-hundred & thirty-two and a trailer composite with six first-class compartments flanked by two third-class at each end and seating sixty first and forty-eight third, giving a unit total of sixty first and three-hundred & ninety-six third. The unit was 257' 5" long and weighed 144 tons (motorcoaches 43 tons, trailers 29 tons) and painted in malachite green livery.

The motorman’s cab was entered by inwards opening doors, then followed the guard’s brake-van with a pair of outward opening doors on each side. The cab was 4’ 8¼” in depth, whilst the guard’s compartment was 7’ 5½” wide and there was a swing door on the offside into the cab. Then followed nine full compartments each seating 12 and 5’ 6” in width. The motorcoach was to diagram no.2118 and was equipped with EE electrical gear, DH25 compressors and EE339 motors, the motor bogies being of the ‘Central’ type. The compartments at the end of the motorcoaches adjacent to the guard's compartment were designated for ‘Ladies Only’.

The 11-compartment trailer third was to diagram no.2012, each compartment being 5’ 6¾” in width and the 10-compartment trailer composite was to diagram no.2312, with third-class compartments again 5’ 6¾” wide whilst the first-class compartments were 6’ 6” wide.

First-class was subsequently discontinued in suburban trains and with the abolition of Second-class on 3^rd June 1956, Third-class was renamed Second-class. The composite car was thus altered to seat one-hundred & twenty before unit no.4101 entered service and the unit total was four-hundred & sixty-eight third. Trailer bogies were the SR standard 9’ 0” wheelbase bogie with oil axleboxes.

This unit (along with the next nine into service) differed from all later 4 SUB units in having the older style timber and canvas roofs and a squarer cab end design similar to the 2 HAL units with which they could run in multiple.

The sides of the cab on this batch were flat; the body then changing shape to the rounded sides of the remainder of the unit.

Nine further sets unit nos.4102 ‑ 4110 were produced between January and April 1945 to an identical design, but being third-class only from the outset seated four-hundred & sixty-eight. Internally the units were finished with plywood interior partitions and panelling covered in medium brown rexine with cream coloured cotton covering on the ceilings. Seating was the fixed bench type. All ten units were to order number HO 1060.

Eastleigh Body Pressings

Units nos.4101 - 4110 were the first produced using new jigs at Eastleigh works, these being used to produce large metal pressings, mostly with a ¼ light window opening at each end, the outer edges of each pressing forming the edges of the adjacent doorways. Smaller pressings incorporating only one ¼ light window were made for each end of the vehicle.

The pressings were curved from gutter to solebar, whilst steel doors to the same profile were fitted; these each having a droplight window above which was a small oval light. The droplights were frameless and mounted on a spring ‘lazy arm’ (allowing then to be opened variable amounts) with a spring ‘lift rail’ along the top of the droplight to control opening and keep the window closed by latching into clips at the top when required.

Vehicle ends were also formed of large metal pressings, these having some vertical ribbing to give added strength. As this batch still had timber and canvas roofs, they had their gutters in the conventional position at cantrail level, this was raised higher on later units with steel roofs.

Unit no.4108 approaches Manor Road Level Crossing (North Sheen) on a Hounslow Loop to Waterloo service (headcode 89).

This unit carries the BR carriage roundels on its motorcoaches and air-horns, so the photograph dates from after its 13^th June 1963 repaint but prior to Lancing painting yellow panels on units from October 1963. This unit received its yellow panels on 28^th February 1966 with its next varnish at Selhurst.

© Chris Wilson collection

Into Service

When new, unit no.4101 was put into service on the Victoria to Orpington route which at that time was one of the railways busiest. It was joined from April 1942 by the first ‘augmented’ unit no.4131 to make an eight-car train. However, these units worked throughout the suburban system with unit no.4109 being first used on the South Western lines in January 1946, mostly on the Guildford via Cobham route.

During their first overhauls the rexine was replaced by dark brown or maroon and the cotton ceilings painted custard with toffee brown fittings. With third-class being re-designated as second-class from 3^rd June 1956 the cars were reclassified from MBT to MBS and TT to TS respectively.

From November 1962 units began to be fitted with two-tone air horns mounted on the cab roof replacing the whistle, unit no.4101 being done at Lancing and also gained small yellow warning panels on the cab front, unit no.4110 being one of the first SR units so treated in January 1964.

These units all remained in service until early 1972, two being reformed as a result of accident damage. Most received all-blue livery but three units (nos.4104 /4105 & 4109) were withdrawn in the all‑over green which they had carried since new, although all had full yellow ends applied between July 1967 and October 1968.

Unit no.4102 was the last 4 SUB unit to be repainted blue in February 1971. Four units, no.4103 and the three remaining green units (nos.4104 /4105 & 4109) were used for Xmas mails traffic in December 1971 prior to withdrawal. These units received the class number 405/1 under the BR TOPS classification system just prior to withdrawal.

Unit formations, ‘paint dates’, and withdrawal date and scrapping details also vehicle electrical codes were as below:

Unit No.	Date	MBT	11C TT	10C TT	MBT	Wdn date	Scrap
Diag. No		2118	2012	2312	2118
Code		CE	DG	DF	CE
4101	29-Oct-41	10941	10419	11471	10942	13-May-72	Nov-72 C
4102	19-Dec-44	10944	10420	11472	10943	13-May-72	Jan-73 C
4103	11-Jan-45	10946 10762^6	10421	11473	10945	1-Jan-72	Jul-72 C
4104	22-Jan-45	10948	10422	11474	10947	1-Jan-72	Jun-72 J
4105	7-Feb-45	10950	10423	11475	10949	1-Jan-72	Jul-72 C
4106	20-Feb-45	10952 10896^7	10424	11476	10951	18-Mar-72	Feb-73 B
4107	10 Mar-45	10954	10425	11477	10953	13-May-72	Nov-72 C
4108	20 Mar-45	10956	10426	11478 10356^8	10955	13-May-72	Nov-72 C
4109	11 Apr-45	10958	10427	11479	10957	1-Jan-72	Jul-72 C
4110	7 May-45	10960	10428	11480	10959	13-May-72	Apr-73 A

Footnotes
6	2 HAL MBS, diagram 2116, code CD.
7	8 Compt. MBS, diagram 2119, code CH.
8	Augmentation trailer, diagram 2013, code DN.

Key Letter Code for Scrap Dealers
A	Marple & Gillott (Attercliffe).
B	Bird Group (Long Marston).
C	J. Cashmore Ltd (Newport).
J	J. McWilliams Ltd (Shettleston).

Hybrid unit no.4103 with its replacement 2 HAL motorcoach (ex.2644) working a Coulsdon North to London Bridge service at Purley on the Up Local (now the Up Fast) c.May /June 1969.

Right over in platforms 5 & 6 two SR-designed EPB units can just be seen on Caterham /Tattenham Corner services.

© Chris Wilson collection

Individual Unit Notes nos.4101 - 4110

Unit
4101	Unit commenced service 9-Nov-41. Unit to Eastleigh for unspecified repair between 27-Aug-42 and 24-Dec-42 (possible damage?). Unit slightly damaged about February 1946 and repaired at Lancing during overhaul between 20-Feb-46 and 18-Apr-46. Unit withdrawn 30-Apr-72 and initially stored at Epsom Downs, moving to Horsham in June. After stripping at Selhurst moved to Chichester 23-Oct-72. Hauled away for scrapping to J. Cashmore Ltd. Newport 13-Nov-72.
4102	Unit commenced service 1-Jan-45. MBT 10943 and both trailers damaged in derailment and sidescrape (with 2 HAL?) near London Bridge 11-Nov-54 repaired at Eastleigh between 17-Dec-54 and 11-May-55. Unit withdrawn 30-Apr-72 and after withdrawal initially stored at Crystal Palace, then moved from Selhurst to Reigate 12-Jun-72. Unit back to Selhurst for stripping 4-Dec-72 prior to movement to Micheldever. Hauled away for scrapping to J. Cashmore Ltd. Newport 8‑Jan‑73.
4103	Unit commenced service 22-Jan-45. Unit in collision with unit no.5115 at Norwood Junction 31-Dec-68, MBS 10946 withdrawn 25‑Jan‑69 and cut‑up on site 7-Feb-69. Replaced by 2 HAL MBS 10762 (ex.2644) which seated seventy, reducing overall unit capacity to four-hundred & thirty-six whilst increasing weight to 145 tons. Back to traffic 31-Mar-69 in blue livery. Unit withdrawn 1-Jan-72 and after withdrawal stored at Balcombe by 1-Mar-72, moving back to Selhurst for stripping 10-May-72. Hauled away for scrapping to J. Cashmore Ltd. Newport 1-Jul-72.
4104	Unit commenced service 29-Jan-45. Unit withdrawn 1-Jan-72 and after withdrawal and stripping at Selhurst unit hauled to Shalford for storage 14‑Jan‑72. Moved to Basingstoke 31-May-72 and hauled away for scrapping to J. McWilliam Ltd. (Shettleston) 6-Jun-72.
4105	Unit commenced service 19-Feb-45. Unit hit buffers at London Bridge 25-Nov-60, MBS 10950 and TS 10423 damaged and repaired at Peckham Rye. Unit withdrawn 1-Jan-72 and after withdrawal stored at Balcombe by 1-Mar-72, moving back to Selhurst for stripping 10-May-72. Hauled away for scrapping to J. Cashmore Ltd. (Newport) 1-Jul-72.
4106	Unit commenced service 5-Mar-45. Unit overhauled Nov‑55. Unit varnished Jun‑61. Unit completely derailed over yard points at Coulsdon North 25-Jul-62, sent to Lancing for repair between 5-Sep-62 and 11-Jan-63. MBS 10951 damaged in collision with unit no.5248 in Selhurst depot 14-Mar-72 and unit withdrawn 18-Mar-72, MBS 10952 exchanged with damaged MBS 10896 (ex.4355) and unit moved to Micheldever for storage c.12-Jun-72. Moved to Basingstoke 15-Feb-73 and onward for scrapping to Bird Group (Long Marston) the next day.
4107	Unit commenced service 20-Mar-45. MBS 10952 and TS 10425 derailed on catch points at Beckenham Junction 3-Dec-63, repaired at Selhurst. Unit withdrawn 30-Apr-72 and after withdrawal initially stored at Crystal Palace, moving to Horsham in June. After stripping at Selhurst moved to Chichester 23-Oct-72. Hauled away for scrapping to J. Cashmore Ltd. (Newport) 13-Nov-72.
4108	Unit commenced service 10-Apr-45. Unit damaged about March 1960 (details unknown) and repaired at Selhurst between 25-Mar-60 and 31-Mar-60. 10- Compt. TS 11478 badly damaged in converging collision at Wimbledon Park 28-Dec-60 (possibly in collision with 4 COR unit no.3143) and withdrawn 28‑Jan‑61. Body stripped at Wimbledon Park then stored at Micheldever until to Strawberry Hill 30‑Jan‑61 for electrical stripping and scrapped at Newhaven arriving 28-Feb-61. Replaced by reinstated 10356 (ex. augmented 4 SUB unit no.4334) from 26-Jan-61, also a wooden roofed vehicle weighing 28 tons so overall unit weight now 143 tons. Unit withdrawn 30-Apr-72 and initially stored at Crystal Palace, moving to Horsham in June. After stripping at Selhurst moved to Chichester 23-Oct-72. Hauled away for scrapping to J. Cashmore Ltd. (Newport) 13-Nov-72.
4109	Unit commenced service 26-Apr-45. Unit damaged about December 1959 (details unknown) and repaired at Eastleigh between 18-Jan-60 and 10-Mar-60. Unit to Lancing for roof repairs between 18-Apr-62 and 15-May-62. Unit withdrawn 1-Jan-72 and stored at Wimbledon Park, moving to Selhurst for stripping 16-Feb-72. Hauled to Clapham Yard 10-Jun-72 and on to Salisbury 17-Jun-72, moving for scrapping to J. Cashmore Ltd. (Newport) 19-Jun-72.
4110	Unit commenced service 31-May-45. Unit damaged about January 1947 (details unknown) and repaired at Eastleigh between 27-Jan-47 and 3-Mar-47. MBT 10959 slightly damaged in collision with unit no.4313 at Victoria 8-Dec-49. Unit at Lancing for bogie repair between 18-May-54 and 14-Jun-54 (details unknown). Unit withdrawn 30-Apr-72 and after stripping at Selhurst hauled to Clapham Yard 15-Jul-72 and on to Micheldever for storage 22-Jul-72. Hauled away for scrapping to Marple & Gillott (Attercliffe) 5-Apr-73 from Basingstoke.

Augmentation Trailers Nos.10346 - 10400

The first fifty-five augmentation trailers to order number HO 1094 were constructed in 1945‑6 and were similar in design to the 10-compartment trailers in units nos.4101 ‑ 4110 though each compartment was the same width at 6' 1" as no First-class accommodation was intended. This resulted in the Third-class compartments being wider than those in the units nos.4101 ‑ 4110 batch. Each compartment seated twelve passengers giving a total of one-hundred & twenty Third (later Second) class seats. All these vehicles were built at Eastleigh on new underframes from Lancing and weighed 28 tons.

Order number HO 1094 was sub-divided into three with HO 1094A for vehicles 10346 ‑ 10375, HO 1094B for 10376 ‑ 10390 and HO 1094C for 10391 ‑ 10400.

Only the last ten built were of all-steel construction, the first forty-five having timber and canvas roofs, the last suburban cars built with this feature with all later 4 SUB vehicles being of the ‘all-steel’ variety. As a result, most of the wooden roofed cars were in fact withdrawn for scrapping when the unit they were included in was withdrawn in the late 1950s. However, a few saw further use - four in the 7 TC unit no.900 (later no.701), one in 4 LAV unit no.2926 and one in wooden-roofed 4 SUB unit no.4108.

The final ten all-steel vehicles all saw further use, four being converted into de-icing trailers, two going into later 4 SUB units and the remainder converted to 4 EPB trailers. These cars were initially used to augment 3-Car Motor Units nos.1285 ‑ 1310 and nos.1496 ‑ 1524 which were renumbered as unit nos.4300 - 4354 respectively. They were built to diagram number 2013. As both batches of units were being augmented at the same time, cars were allocated between the batches when they were completed and not allocated in any sort of number order. Corner armrests were provided in the all-steel sub-batch (but not the first forty-five built with timber and canvas roofs). The all-steel sub-batch also had the higher gutter line, the wooden-roofed ones having a gutter at cantrail level and a curved rainstrip above.

Following withdrawal, most of these augmentation trailers were removed from their pre-war units and stored, mostly at Micheldever with a few on the Didcot, Newbury and Southampton spur line near Winchester Jct. However, most were not used in traffic again and were eventually taken to Newhaven for scrapping, usually in batches of four marshalled between pairs of withdrawn motorcoaches. These were routed via Strawberry Hill where the motorcoaches were electrically stripped, before being hauled to Newhaven.

Coach	New	To unit(s)	Withdrawn	Scrap	Date
Diag. No.	2013
10346	Jun-45	4329 /900 /701 /4131	9-Oct-71	A King Ltd (Wymondham)	Aug-72
10347	Jun-45	4343	22-Apr-61	Newhaven	Jul-63
10348	Jun-45	4332	27-Aug-60	Newhaven	Oct-63
10349	Jul-45	4346 /900 /701 /4132	9-Oct-71	A King Ltd (Wymondham)	8-72
10350	Jul-45	4354	5-Dec-59	Newhaven	Jul-63
10351	Jul-45	4328 /900 /701 /4132	9-Oct-71	A King Ltd (Wymondham)	Aug-72
10352	Jul-45	4339 /4348	20-Jan-62	Newhaven	Aug-63
10353	Aug-45	4352 /900 /701 /4364	22-Nov-75	Mayer Newman (Snailwell)	Oct-76
10354	Aug-45	4341	30-Apr-60	Newhaven	Dec-63
10355	Aug-45	4319	9-Jul-60	Newhaven	Oct-63
10356	Aug-45	4334 /4108	13-May-72	J Cashmore Ltd (Newport)	Oct-72
10357	Aug-45	4315 /4308	20-Jan-62	Newhaven	c.Sep-63
10358	Aug-45	4342	18-Jun-60	Newhaven	Oct-63
10359	Aug-45	4338 /2926 /4282 /4369	6-Oct-73	A King Ltd (Wymondham)	Jul-74
10360	Aug-45	4347	20-May-61	Newhaven	Jul-63
10361	Aug-45	4331 /4348	20-Jan-62	Newhaven	Aug-63
10362	Sep-45	4326	6-May-61	Newhaven	Jul-63
10363	Sep-45	4353	27-Aug-60	Newhaven	Oct-63
10364	Sep-45	4337	20-Jan-62	Newhaven	Aug-63
10365	Sep-45	4336	14-Nov-59	Newhaven	Dec-63
10366	Sep-45	4316	26-Mar-60	Newhaven	Jan-64
10367	Sep-45	4318	30-Jan-60	Newhaven	c.Apr-64
10368	Sep-45	4330	20-Jan-62	Newhaven	Nov-63
10369	Oct-45	4309	21-May-60	Newhaven	Oct-63
10370	Oct-45	4325	7-May-60	Newhaven	Dec-63
10371	Oct-45	4303	13-Feb-60	Newhaven	c.Apr-64
10372	Oct-45	4310 /4309	21-May-60	Newhaven	Oct-63
10373	Oct-45	4350 /4607 /4333	18-Nov-61	Newhaven	Sep-63
10374	Oct-45	4307	16-Apr-60	Newhaven	Dec-63
10375	Oct-45	4322	4-Nov-61	Newhaven	c.Oct-63
10376	Nov-45	4313 /4594 /4335	20-Jan-62	Newhaven	Sep-63
10377	Nov-45	4323	15-Apr-61	Newhaven	Jul-63
10378	Nov-45	4312	11-Jun-60	Newhaven	Oct-63
10379	Nov-45	4311	15-Nov-60	Newhaven	Jul-63
10380	Nov-45	4308	20-Jan-62	Newhaven	c.Sep-63
10381	Nov-45	4302 /4335	20-Jan-62	Newhaven	Sep-63
10382	Dec-45	4305	27-May-61	Newhaven	Jul-63
10383	Dec-45	4301 /4322	4-Nov-61	Newhaven	c.Oct-63
10384	Dec-45	4300	19-Apr-58	Newhaven	May-58
10385	Dec-45	4321 /4324	4-Nov-61	Newhaven	Sep-63
10386	Jan-46	4324	4-Nov-61	Newhaven	Sep-63
10387	Jan-46	4320	2-Apr-60	Newhaven	Jan-64
10388	Jan-46	4306	9-Apr-60	Newhaven	Jan-64
10389	Jan-46	4314	29-Apr-61	Newhaven	Jul-63
10390	Feb-46	4317	26-Mar-60	Newhaven	Jan-64

De-icing trailer ADS70087 was former all-steel trailer S10400S built in April 1946 & used in 4 SUB 4349 (ex.3 Car Motor Unit).

(Ashford Works 19^th August 1978)

© Tony Watson

All-Steel Vehicles

Coach	New	To unit(s)	Withdrawn	Converted	Date
Diag. No.	2013
Code	DN	(SUB)
	DU	(EPB conversions)
10391	Feb-46	4335 /5010	-	15010	May-52
10392	Feb-46	4345	11-Apr-59	DS70050	Sep-59
10393	Mar-46	4348 /4729	30-Mar-74
10394	Mar-46	4327 /5150	-	15228	c.May-63
10395	Mar-46	4344 /5262	-	15083	Nov-65
10396	Mar-46	4340 /4115	1-Jan-72
10397	Mar-46	4304	4-Jun-60	DS70086	1960
10398	Mar-46	4333 /5001	-	15001	Oct-51
10399	Mar-46	4351	11-Apr-59	DS70051	Sep59
10400	Apr-46	4349	2-Jul-60	DS70087	Nov-60

Many of these vehicles spent some time in store (usually at Micheldever or on the former Didcot, Newbury and Southampton line near Winchester Jct) following the withdrawal of the pre-war units in which they were running, before being taken to Newhaven for scrapping. One feature of this batch (also seen on the following units nos.4111 ‑ 4120 batch of 4 SUB units) were the two-small semi‑circular air vents above the door droplights in place of the usual oval window. As these doors were fully interchangeable with those on all other 4 SUB (and the SR type 4 EPB units) many of them appeared on other vehicles, outliving this batch of cars by many years.

4 SUB unit no.4112 at Waddon 17^th May 1964 (Whit-Sunday)
working a Victoria to Epsom Downs service (headcode 84).
© John Hayward

Units Nos.4111 – 4120
(‘Marys’)

A further ten complete units were next constructed at Eastleigh between April and July 1946, all on new underframes from Lancing and numbered 4111 ‑ 4120. These were also ordered as part of order HO 1060 and were the first all-steel units with a revised cab end design which was followed on all subsequent 4 SUB units built (i.e. with straight cab ends without the dome or inset cab doors).

Experience with the earlier unit no.4101 batch led to a revised seating layout, that of the earlier units now being considered as too cramped, with insufficient room for standing passengers in the narrow compartments. As a result, each vehicle in this batch had one less compartment per car, the motorcoaches now having eight (seating ninety-six), one trailer having ten (seating one-hundred & twenty) and the other trailer having nine (seating one-hundred & eight) six of which were wider than usual to allow possible reinstatement of First-class seating (which never took place). These six wider compartments were in the centre of the vehicle with normal width compartments flanking (two at one end /one at the other) with the two narrower compartments being marshalled against the adjacent motorcoach.

Overall seating capacity of this batch of units was four-hundred & twenty third and they were of the standard 4 SUB length of 257' 5". Diagram numbers allocated were: MBT diag. no.2119, 9-compartment TT diag. no.2314 and 10-compartment TT diag. no.2014.

The guard’s brakevan in these units was slightly wider also at 8' 0½" which became standard in all later motorcoaches built. Units were fitted with the ‘Central’ type 43" motor bogies powered by EE339 275hp motors. Motorcoaches weighed 43 tons and trailers 28 tons giving a unit total of 142 tons.

Internally the units were fitted out similarly to the unit no.4101 batch and this batch were the first to have the much higher gutter line on the car exterior with nothing along the traditional cantrail area. Subsequent to this, units nos.4112 /4115 /4118 were fitted with rainstrips in the traditional position along the cantrail.

Units were close-coupled within, using the standard suburban centre-buffer and three-link chain arrangement: this being bolted with shackles underneath the headstock (keeping the centre-buffer under compression). On cab ends there was the usual central drawhook with side buffers. The corridor trailer had a centre buffer at both ends; the non-corridor trailer had a buffer at the third-class end and a rubbing plate at the first-class end whilst both motorcoaches had rubbing plates.

During first overhaul unit no.4120 had internal partitions replaced by Formica, ceilings replaced by plastic sheet and other panels replaced by ‘Hardec’, a plastic-coated plywood system.

From January 1964 units gained small yellow warning panels on cab ends, unit no.4117 being one of the first units so adorned. Unit no.4117 was painted blue with small yellow panels in October 1966, whilst units nos.4111 /4112 /4113 /4114 /4115 /4116 /4118 & 4119 gained full yellow ends whilst still green and unit no.4120 went straight from green to blue with full yellow ends in July 1967.

Unit nos.4115 & 4118 were withdrawn still in green livery after use on Xmas mails traffic in December 1971, all other units eventually being painted blue with full yellow ends. These units were also classified as Class 405/1 under the BR TOPS classification system from 1972. These units remained in service until withdrawals started in 1972 and all had gone by the end of 1975.

Unit No.	Date	MBT	10C TT	9C TT	MBT	Withdrawn date	Scrap date
Diag. No		2119	2014	2314	2119
Code		CF	DK	DL	CF
4111	30-Apr-46	10961	10429	11481	10962	13-May-72	Oct-72 B
4112	May-46	10964	10430	11482	10963	22-Nov-75	Oct-76 M
4113	24-May-46	10966	10431	11483	10965	22-Nov-75	Jun-76 B
4114	31-May-46	10968	10432	11484	10967 10934^9 10967	13-May-72	Jan-73 C
4115	7-Jun-46	10970	10433	11485 10396^10	10969	1-Jan-72	Jun-72 J
4116	20-Jun-46	10972	10434	11486	10971	13-May-72	Aug-73 K
4117	27-Jun-46	10974	10435	11487	10973	22-Nov-75	Oct-76 S
4118	4-Jul-46	10976	10436	11488	10975	1-Jan-72	Jul-72 C
4119	12-Jul-46	10978	10437	11489	10977	6-Oct-73	Mar-75 K
4120	20-Jul-46	10980 11363^11	10438	11490	10979	13-May-72	Oct-72 B

Footnotes
9	MBS code CH.
10	10-Compt. TS diagram 2013, code DN.
11	Saloon MBS diagram 2126, code CM.

Key Letter Code for Scrap Dealers
B C J M S	Bird Group (Long Marston). J. Cashmore Ltd (Newport). J. McWilliams Ltd (Shettleston). Milton Metals at T. W. Ward (Briton Ferry). A. King Ltd (Snailwell).

Unit no.4114 upon arrival at Sevenoaks with ‘unicycling Lions’ on its motorcoaches which dates this between June 1950 and December 1957. Note the ‘target’ totems, early barley-twist gas lamps and stone platform face. Both side platforms have long since been removed and the left hand track since realigned to become the Up Fast.

© Chris Wilson collection

Individual Unit Notes

Unit
4111	Unit commenced service 8-May-46. Unit withdrawn 30-Apr-72 and after withdrawal and stripping at Selhurst hauled to Shalford for storage 23-May-72, and moved on to Guildford 31-May-72. Moved to Micheldever 5‑Jul‑72, then to Basingstoke 9-Oct-72. Hauled away for scrapping to Bird Group (Long Marston 18-Oct-72).
4112	Unit commenced service 25-May-46. Unit 4112 appeared in John Schlesinger’s 1961 film ‘Terminus’. Unit damaged in collision (with what?) at Gillingham depot Apr‑58 and not repaired until c.Oct‑58. Unit out of use Apr-72 and stored at Lancing and withdrawn 11-May-72 but then reinstated 2-Aug-75. However, unit remained out of use at Lancing and stored there until withdrawn 22-Nov-75 and moved to Selhurst for stripping. Both trailers from unit no.4361 formed into unit for disposal as a 6-car. Hauled to Micheldever for storage 1-Mar-76 and onwards for scrapping by Milton Metals at T. W. Ward’s yard (Briton Ferry) 12-Oct-76 from Salisbury.
4113	Unit commenced service 1-Jun-46. Unit damaged about August 1952 (details unknown) and both MBT cars and TT 10431 damaged, TT 11483 temporarily exchanged with damaged 10-compartment 10453 (ex.4551) and unit to Eastleigh for repairs between 9-Sep-52 and 17-Oct-52 reverted to normal formation c.27-Feb-53. Unit out-of-use Apr‑72 and stored at Lancing and withdrawn 13-May-72 but then reinstated 2-Aug-75. However, unit remained of use at Lancing and stored there until withdrawn 22-Nov-75 and moved to Selhurst for stripping. Unit hauled to Micheldever Feb‑76 for store and taken to Basingstoke 7‑Jun‑76 and moved for scrapping to Bird Group (Long Marston) from there the following day.
4114	Unit commenced service 17-Jun-46. Unit in collision with light loco near London Bridge 24‑Jul‑49 and MBT 10968 damaged. MBT 10967 exchanged with damaged 10934 (ex.4374) c.21-Sep-49 and unit to Eastleigh for repairs, released back to traffic 8-Jun-50. Reverted to original formation Jan‑53. Unit at Eastleigh for unspecified repair to both MBT cars between 5-Oct-53 and 2-Dec-53 (possible damage?) then to Selhurst for varnish and released 16-Dec-53. Unit withdrawn 30-Apr-72 and initially stored at Crystal Palace and moved to Reigate 12-Jun‑72. Returned to Selhurst for stripping 4-Dec-72 and hauled to Micheldever for storage. Hauled away for scrapping to J. Cashmore Ltd. (Newport) 8-Jan-73.
4115	Unit commenced service 17-Jun-46. 9-compartment TS 11485 removed from unit during overhaul at Lancing between 27-May-63 and 13-Sep-63 for conversion to composite (the only 4 SUB vehicle ever to run with First-class accommodation). To set no.900 (later 7 TC no.701) from 6-Sep-63 and replaced in no.4115 by 10-compartment augmentation trailer 10396 (ex.4340 but withdrawn 16‑Jul‑60 and in store at Micheldever) from 14-Sep-63. Unit then seated four-hundred & thirty-two. Coach 11485 moved to Eastleigh 14-Aug-63 to be formed into Set 900. Unit withdrawn 1-Jan-72 and after stripping at Selhurst hauled to Shalford for storage 14-Jan-72. Moved to Basingstoke 31-May-72 and hauled away for scrapping to J. McWilliam Ltd. (Shettleston) 6‑Jun‑72.
4116	Unit commenced service 5-Jul-46. Unit withdrawn 30-Apr-72 and initially stored at Crystal Palace and following stripping at Selhurst unit hauled to Chart Leacon 6‑Jun‑72. Moved to Herne Hill by 17-Nov-72 and on to Micheldever for storage 2-Dec-72. Moved to Basingstoke prior to being hauled away for scrapping to A. King Ltd (Wymondham) 9‑Jul‑73.
4117	Unit commenced service 5-Jul-46. Unit (with no.4129) damaged in collision with unit no.4374 at Epsom 28‑Jul‑49 but repaired and varnished at Selhurst between 9-Aug-49 and 18-Aug-49. Unit at Eastleigh for unspecified repair between 26-Jul-50 and 6-Dec-50 (possible damage?). Unit again at Eastleigh for unspecified repair between 16-Dec-52 and 26-Jan-53 (possible damage?). MBS 10974 damaged in derailment at Waterloo South Sidings 3-May-61, TS 10435 also damaged when conductor rail penetrated car end. Unit to Durnsford Road where 10435 repaired, then to Micheldever where 10974 was to be removed to Eastleigh for repair 19-May-61 but the other three cars ‘ran away’ and MBS 10973 also damaged in subsequent collision so whole unit then sent to Eastleigh for repairs between 19-Jun-61 and 26-Sep-61. When unit released both cab interiors had some experimental surface treatment. Unit out of use Apr‑72 and stored at Lancing and withdrawn May‑72 but then reinstated. Unit moved from Wimbledon Park to Lancing 29-Sep-73 and withdrawn again 6-Oct-73 though it was officially reinstated again 2-Aug-75 but remained stored at Lancing until withdrawn 22-Nov-75 and moved to Selhurst for stripping. Hauled to Micheldever for storage Feb‑76, and onwards for scrapping to A. King Ltd (Snailwell) 11-Oct-76
4118	Unit commenced service 18-Jul-46. Unit at Eastleigh for unspecified repair between 3-Aug-50 and 9-Nov-50 (possible damage?). Unit withdrawn 1-Jan-72 and after withdrawal stored at Wimbledon Park, moving to Selhurst for stripping 16-Feb-72. Hauled to Woking 29-Mar-72 and on to Micheldever 15-Apr-72 for storage and moved away for scrapping to J. Cashmore Ltd. (Newport) 13‑Jul‑72.
4119	Unit commenced service 18-Jul-46. Unit to Lancing for storage from Wimbledon Park 2-Oct-73 and withdrawn from there on 6-Oct-73, moving to Selhurst for stripping 17-Oct-73. Hauled to Clapham Yard Dec‑73 and on to Micheldever Jan‑74. Moved away for scrapping 28-Aug-74, not arriving at A. King Ltd (Wymondham) until 15-Mar-75 after a period at Thetford.
4120	Unit commenced service 1-Aug-46. MBS 10980 cab badly damaged in collision with unit no.5335 near Gipsy Hill 18-Dec-61, condemned 27-Jan-62 and broken-up at Durnsford Road 11-Feb-62. Replaced by eighty-two seat saloon MBS 11363 (ex.4652) after damage repairs at Lancing which had its EE507 motors replaced by EE339 type at Durnsford Road prior to reform and unit back to traffic 20-Mar-62. Unit then seated four-hundred & six and weighed 141 tons. Unit quite badly damaged about February 1968 (details unknown) and to Eastleigh for C5 repair 6-Mar-68, not released until 29-Nov-68. Unit withdrawn 30-Apr-72 and after stripping at Selhurst hauled to Shalford for storage 23-May-72 and moved on to Guildford 31-May-72. Moved to Micheldever 5‑Jul‑72, then to Basingstoke 9-Oct-72. Hauled away for scrapping to Bird Group (Long Marston) 18-Oct-72.

8 SUB formation with no.4126 in rear passes Wimbledon West
signal box with the 18.04 to Shepperton on 1^st June 1972
^©BloodandCustard

Semi - Saloon Units
Nos.4121 - 4130

The final batch of ten units in the original 1939 order for thirty appeared in service between August / October 1946, and were built at Eastleigh works on new underframes from Lancing and were numbered 4121 ‑ 4130. This batch of units was also ordered as part of order number HO 1060 and became known as the ‘Semi‑Saloon’ units.

These units outwardly appeared identical to units nos.4111 ‑ 4120 and were to the now standard 4 SUB length of 257' 5" and weighed 142 tons as previously with the exception of no.4130 (see later). However, in a further attempt to improve the lot of standing passengers in peak hours, these units had an experimental internal seating layout. One trailer (the 9-compartment pseudo-composite) was identical to those in the no.4111 batch with one-hundred & eight seats all in compartments. The other trailer was of the saloon layout with two internal partitions dividing the car into saloons of three /four /three seating bays.

At the saloon ends were the usual full-width bench type seats for six, but within the saloon the seats were arranged with three to one side and two to the other of an off-centre central gangway. These seats had hammock slung cushions and unlike later saloon cars, the seating units did not have an armrest by the central gangway; this car seated one-hundred & six. The motorcoaches were similar in concept, with one central partition dividing the car into two bays of four, each car now seating eighty-four. Overall unit capacity was therefore three-hundred & eighty-two.

Luggage racks above the seats in saloons were made from welded steel tube which became standard on all later units, though unit no.4130 was fitted with wrought brass racks as fitted to the COR /BUF /RES units. Unit no.4126 had experimental grab handles fitted by the doors in compartment ‘D’ of the compartment trailer. The offside gangway was to the nearside in each motorcoach when that vehicle was leading, that in the saloon trailer was to the same side as that of the adjacent motorcoach. The 9-compartment trailer was marshalled with the two narrower compartments against the adjacent motorcoach.

The final unit of the batch (no.4130) was equipped with experimental EE507 motors, which were lighter in weight at 1.92 tons compared with the 3.6 tons of the earlier EE339 type. In unit no.4130 these were rated at 185hp although the many fitted into later units were rated at 250hp. These motors reduced the weight of the motorcoaches of unit no.4130 to 40 tons and the overall unit weight to 136 tons. These motors were subsequently replaced by EE339 ones in December 1955 and the unit reverted to the standard weight for this batch.

Interior decor was similar to the earlier batches and during first overhaul units nos.4121 /4122 /4123 /4125 & 4128 were retrimmed similarly to the no.4111 batch, units nos.4124 /4126 & 4127 being done in the same style as no.4120. Units nos.4126 ‑ 4129 were given Formica partitions whilst retaining the rexine covered panelling, unit no.4129 also later gained cantrail rainstrips.

Units nos.4121 /4124 /4126 & 4127 were painted all-over blue with small yellow warning panels at Eastleigh during ‘C1’ overhauls during 1966, nos.4122 /4123 /4125 & 4128 gaining full-yellow ends with green livery at Selhurst during ‘C6‘ overhauls in 1967-1968, whilst nos.4129 /4130 went from green straight to blue with full yellow ends (unit no.4130 being the first into this state in December 1967). All units eventually gained this livery on subsequent repaint.

This batch of units started to be withdrawn in 1971 but many of the motorcoaches were converted for departmental use in ‘new’ de-icing units converted at Selhurst between 1977 and 1982. These units were also Class 405/1 under the BR TOPS classification system from 1972.

Unit formations, completion and withdrawal dates were as follows:

Unit No.	Date	MBT (S-S)	TT (S-S)	9C TT	MBT (S-S)	Withdrawn date	Scrap date
Diag. No		2120	2015	2314	2120
Code		CG	DM	DL	CG
4121	Aug-46	10982	10439	11491	10981	16-Apr-76	Oct-81 B
4122	23-Aug-46	10984	10440	11492	10983	13-May-72	Apr-73 G
4123	29-Aug-46	10986	10441	11493	10985	9-Oct-71	24‑Jan‑72 K
4124	Aug-46	10988	10442	11494	10987	20-Apr-76	See notes
4125	Aug-46	10990	10443	11495	10989	23-Apr-76	Oct-81 B
4126	Sep-46	10992	10444	11496 10448^12	10991	16-Apr-76	See notes
4127	Sep-46	10993	10445	11497 10446^13	10994	16-Apr-76	See notes
4128	Sep-46	10995	10446 11497^14	11498	10996	22-Nov-75	18-Mar-76 M
4129	15-Oct-46	10998	10447	11499	10997	13-May-72	>Apr-73 G
4130	Oct-46	10999	10448 11496^15	11500	11000	22-Nov-75	>Mar-76 M

Footnotes
12	10-Compt. semi-saloon TS, diagram 2015, code DM.
13	10-Compt. semi-saloon TS, diagram 2015, code DM.
14	9-Compt. TS, diagram 2314, code DL.
15	9-Compt. TS, diagram 2314, code DL.

Key Letter Code for Scrap Dealers
B G K M	Bird Group (Long Marston). Marple & Gillott Ltd (Attercliffe). A. King Ltd (Wymondham). Milton Metals at T. W. Ward (Briton Ferry).

Individual Unit Notes

Unit
4121	Unit commenced service 2-Sep-46. Unit withdrawn 16-Apr-76 and semi‑saloon trailer 10439 exchanged with TS 10146 (ex.4279) May‑76 and unit stored at Norwood Yard. MBS cars stored until 20-Feb-77 when used for conversion to de-icing motorcoaches for unit 005, 10981 renumbered ADB975588 and 10982 renumbered ADB975589, both from 10-Dec-77. Both trailers scrapped by Bird Group (Long Marston) Oct‑81 as part of 8-car ‘4607’.
4122	Unit commenced service 30-Aug-46. Unit damaged early 1965 (details unknown) and both MBS cars 10983 & 10984 to Eastleigh for repairs between 19-Jan-65 and 3-May-65. Unit slightly damaged about January 1968 (details unknown) and repaired at Selhurst between 25-Jan-68 and 30-Jan-68. Unit withdrawn 30-Apr-72 and initially stored at Surbiton then moved to Selhurst for stripping 13-Jul-72. Unit hauled to Micheldever for storage 5-Aug-72 and hauled away for scrapping from Basingstoke 5-Apr-73 by Marple & Gillott Ltd (Attercliffe) Apr‑73.
4123	Unit commenced service 16-Sep-46. Unit at Lancing for ‘A’ repair between 16-Jul-59 and 11-Aug-59 (possible damage?). Unit damaged in derailment at Strawberry Hill 13-Sep-71 and condemned 9-Oct-71. Moved to Micheldever for storage Oct‑71 and hauled away for scrapping to A. King Ltd (Wymondham) 24-Jan-72.
4124	Unit commenced service 18-Sep-46. Unit damaged in collision with loco‑hauled train outside Victoria 12-Feb-48 but repaired. MBS 10988 slightly damaged about September 1966 and unit to Eastleigh 5-Oct-66 for C1 overhaul and repair, released 11-Nov-66 in blue livery. Unit withdrawn 20-Apr-76 and semi‑saloon trailer 10442 exchanged with TS 10165 (ex.4298) Jul-76 and unit stored at Norwood Yard. MBS cars stored until 7-Dec-78 when used for conversion to de-icing motorcoaches. 10987 renumbered ADB975597 for unit 008 from 30-Jun-79, 10988 renumbered ADB975600 for unit no.010 from 11-Jun-80. Trailers 10165 and 11494 both stored at Micheldever by 1978 as part of 8-car ‘4647’, later removed and to Horwich works 12-Sep-80 for disposal as part of ‘4647’.
4125	Unit commenced service 16-Sep-46. Unit withdrawn 23-Apr-76 and semi‑saloon trailer 10443 exchanged with TS 10339 (ex.4721) Jun‑76 and unit stored at Norwood Yard. MBS cars stored until 24-Feb-79 when used for conversion to de-icing motorcoaches for unit no.009. 10989 renumbered ADB975598 and 10990 renumbered ADB975599, both from 29-Dec-79. Both trailers scrapped by Bird Group (Long Marston) Oct‑81 as part of 8-car ‘4607’.
4126	Unit commenced service 28-Sep-46. 9-compartment TS 11496 withdrawn May‑74 and exchanged with semi‑saloon TS 10448 (ex.4130) and unit to Eastleigh 7-May-74 for C1 overhaul, released in new formation 24-May-74. Seating capacity now three-hundred & eighty. Unit damaged in collision (with what?) at Streatham Hill 1-Jul-74 but repaired. Unit withdrawn 16-Apr-76 and stored initially at Hounslow and moved to West Croydon 7-May-76, and both semi‑saloon trailers to unit no.4601 Jun‑76 in reformation at Selhurst. MBS cars stored at Norwood Yard until 15-May-80 when used for conversion to de-icing motorcoaches for unit no.011. Cars 10991 renumbered ADB975602 and 10992 renumbered ADB975603, both from 29-Nov-80.
4127	Unit commenced service 30-Sep-46. With unit no.4630, unit slightly damaged in collision with units nos.5682 + 5669 + 5032 in Wimbledon South Sidings 8-Aug-61. 9-compartment TS 11497 withdrawn May‑74 and exchanged with semi‑saloon TS 10446 (ex.4128) at Selhurst and unit to Eastleigh 3-Jun-74 for C1 overhaul, released in new formation 28-Jun-74. Seating capacity now three-hundred & eighty. Unit withdrawn Apr‑76 and stored initially at Hampton Court then moved to Streatham Hill 6-May-76; both semi‑saloon trailers to unit no.4603 Jun‑76 in reform at Selhurst. MBS cars stored at Norwood Yard until 6-Dec-77 when used for conversion to de-icing motorcoaches. 10993 renumbered ADB975592 for unit no.007 from 21-Oct-78, 10994 renumbered ADB975595 for unit no.002 from 7-Dec-78 (this unit became no.003 in 1982).
4128	Unit commenced service 11-Oct-46. With unit no.4631, unit damaged in buffer stop collision at London Bridge 16-May-61 and repaired at Peckham Rye. Unit withdrawn 25-May-74 and semi‑saloon TS 10446 exchanged with 9-compartment TS 11497 (ex.4127) at Selhurst and unit stripped and moved to store at Micheldever 25-May-74. Unit officially reinstated from 2-Aug-75 but not used and withdrawn again 22-Nov-75. Unit then to scrap by Milton Metals at T. W. Ward’s yard (Briton Ferry) moving from Micheldever 18-Mar-76.
4129	Unit commenced service 1-Nov-46. With unit no.4117, unit damaged in collision with unit no.4374 at Epsom 28-Jul-49, unit stored then cars 10997, 11499 and 10447 all under repair at Eastleigh between 28-Aug-50 and 24-Apr-51. Unit badly damaged once again about September 1955 (details unknown) and repaired and overhauled at Eastleigh between 29-Sep-55 and 6-Jun-56. Unit withdrawn 30-Apr-72 and initially stored at Crystal Palace; following stripping at Selhurst unit hauled to Chart Leacon 6-Jun-72. Moved to Herne Hill by 17-Nov-72 and on to Micheldever for storage 2-Dec-72. Moved to Basingstoke prior to being hauled away for scrapping 5-Apr-73 to Marple & Gillott Ltd (Attercliffe).
4130	Unit commenced service 23-Jan-47. Unit withdrawn 11-May-74 and semi‑saloon TS 10448 exchanged with 9-Compt. TS 11496 (ex.4126) at Eastleigh where unit stripped and then stored at Micheldever from 14-May-74. Unit officially reinstated from 2-Aug-75 but not used and withdrawn again 22-Nov-75. Unit then to scrap by Milton Metals at T. W. Ward’s yard (Briton Ferry) moving from Micheldever 11-Mar-76.

Augmentation trailer no.10239 was originally used briefly in unit no.4424 thence no.4413, in 1951 it was incorporated into new unit no.4732 and is seen here on 26^th February 1983 following the units repaint from blue to green livery.

© John Atkinson

Augmentation Trailers
Nos.10230 - 10345

Following the construction of the semi‑saloon units nos.4121 ‑ 4130, Eastleigh works then turned out one hundred and sixteen 10-compartment augmentation trailers on new underframes from Lancing between October 1946 and June 1947; identical to those built earlier but all of the all-steel variety. These cars were numbered 10230 - 10345 to order number HO 3351 and all went into pre-war 3-Car Motor Units from various different batches which were then renumbered into the number range 4401 ‑ 4516. Many of these units were withdrawn for modifications and there were numerous exchanges of augmentation trailers between units.

These trailers were inserted into the 3-Car Motor Units at Selhurst, arriving there in batches of four or six (not in numerical order). However, after the first thirty-six had been delivered (with thirty used in augmented units) problems were found with wheels fouling part of the underframe under crush‑loading conditions, so the six unused vehicles were returned to Eastleigh for modification and all subsequent deliveries were already modified. The first thirty were then removed from their units and replaced by modified cars, returned to Eastleigh for modification and subsequently re‑used in later augmentations.

The augmented units began to be withdrawn in the early fifties and all these augmentation trailers were then reformed into new 4 SUB units or fitted with electro-pneumatic (EP) braking and renumbered into the 150xx series and reformed into new 4 EPB units.

The list below shows the number of the pre-war unit(s) in which the car ran as an augmentation trailer, the date of this unit’s withdrawal followed by the number of the 4 SUB or 4 EPB unit into which the car was eventually formed, with its new number (if applicable).

Coach	New	To pre-war unit(s)	Disbanded	New No.	To Unit
Diag. No.	2013
Code	DN (SUB)
	DU (EPB)
10230	8-Jan-47	4488 /4436	c.Jun-50	-	4676
10231	9-Jan-47	4421 /4491	c.Nov-50	-	4706
10232	10-Jan-47	4495 /4473	c.Sep-50	-	4692
10233	8-Jan-47	4452	c.Dec-c.50	-	4709
10234	26-Feb-47	4407	c.Jul-51	-	4735
10235	4-Mar-47	4476	c.Apr-51	-	4725
10236	7-Mar-47	4459	c.Oct-50	-	4699
10237	26-Feb-47	4465	c.Apr-50	-	4606 (1)
10238	30-Jan-47	4464 /4409	Feb-53	15018	5018
10239	4-Feb-47	4424 /4413	c.Jun-51	-	4732
10240	May-47	4448	c.Apr-50	-	4601 (1)
10241	May-47	4514	c.Aug-51	-	4745
10242	24-Dec-c.46	4462 /4442	Apr-50	-	4602 (1)
10243	23-Dec-c.46	4505 /4437	c.Feb-51	-	4719
10244	1-Jan-47	4487 /4506	c.Sep-51	-	4752
10245	30-Dec-c.46	4466 /4492	Mar-50	-	4601 (2)
10246	May-47	4425	Mar-56	15039	5221
10247	May-47	4472	c.Jun-50	-	4677
10248	May-47	4463	c.Apr-50	-	4606 (2)
10249	May-47	4435	May-50	-	4670
10250	1-Jul-47	4455	Oct-50	-	4700
10251	Jul-47	4411	Mar-53	15016	5016
10252	3-Jul-47	4511	Feb-51	-	4718
10253	Sep-47	4422	c.Jul-51	15006	5006
10254	Jul-47	4405	c.Mar-53	15021	5021
10255	Jul-47	4439	c.Jul-51	-	4740
10256	13-Feb-47	4481	c.Jan-51	-	4713
10257	14-Feb-47	4502	c.Sep-51	-	4754
10258	Feb-47	4433	Jun-50	-	4675
10259	13-Feb-47	4478	c.Apr-50	-	4605 (1)
10260	12-Feb-47	4424	Apr-56	15050	5232
10261	17-Feb-47	4487	c.Apr-50	-	4669
10262	14-Feb-47	4508	c.Feb-51	-	4730
10263	23-Dec-c.46	4445 /4446	c.Sep-50	-	4694
10264	14-Jan-47	4407 /4490	c.Apr-50	-	4668
10265	25-Dec-c.46	4451 /4445	Apr-50	-	4604 (1)
10266	17-Dec-c.46	4490 /4418	Mar-53	15024	5024
10267	13-Jan-47	4508 /4498	c.Aug-50	-	4687
10268	20-Jan-47	4438 /4431	c.Sep-51	-	4749
10269	16-Jan-47	4478 /4430	c.Aug-51	-	4747
10270	17-Jan-47	4409 /4406	c.Jul-50	-	4684
10271	3-Jan-47	4502 /4453	Nov-50	-	4705
10272	6-Jan-47	4498 /4515	Apr-53	-	5028
10273	11-Jan-47	4458 /4512	c.Sep-51	15028	4743
10274	7-Jan-47	4408 /4467	c.Jul-50	-	4686
10275	22-Jan-47	4460 /4427	Apr-56	15043	5225
10276	21-Jan-47	4434 /4441	Apr-50	-	4602 (2)
10277	24-Jan-47	4455 /4503	Jul-52	15015	5015
10278	23-Jan-47	4431 /4510	Jul-53	15030	5030
10279	27-Jan-47	4465 /4454	c.Apr-50	-	4671
10280	28-Jan-47	4511 /4412	c.Jul-53	15032	5032
10281	27-Feb-47	4408	c.Feb-53	15027	5027
10282	1-Feb-47	4427 /4444	Sep-50	-	4690
10283	28-Jan-47	4481 /4429	Apr-56	15042	5224
10284	25-Feb-47	4451	Apr-51	-	4724
10285	Jul-47	4426	Mar-56	15040	5222
10286	25-Feb-47	4460	c.Oct-50	-	4697
10287	24-Feb-47	4462	Mar-50	-	4603 (1)
10288	Jul-47	4404	c.Aug-51	-	4741
10289	24-Jul-47	4421 /4591	c.Aug-51		4750
10290	Jul-47	4440	c.Jul-50		4683
10291	21-Jul-47	4488	c.Apr-50	-	4667
10292	Jul-47	4402	Feb-53	15017	5017
10293	17-Mar-47	4464	c.Jun-50	-	4682
10294	Mar-47	4450	c.Jan-51	-	4712
10295	Mar-47	4479	c.Nov-50	-	4704
10296	18-Mar-47	4438	c.Jun-50	-	4674
10297	Jun-47	4456	Apr-50	-	4603 (2)
10298	Jun-47	4420	May-53	15026	5026
10299	Jul-47	4426 /4428	Apr-56	15048	5230
10300	24-Feb-47	4434	c.Feb-51	-	4716
10301	May-47	4485	c.Sep-50	-	4689
10302	May-47	4410	c.Jul-51	-	4751
10303	May-47	4496	c.Sep-50	-	4691
10304	Jun-47	4499	c.Jul-50	-	4680
10305	19-Jun-47	4466	c.Nov-50	-	4701
10306	Apr-47	4432	c.Feb-51	-	4717
10307	Apr-47	4449	c.Jan-51	-	4715
10308	Mar-47	4506 /4415	c.Jul-51	-	4737
10309	25-Apr-47	4505	Apr-53	15023	5023
10310	Jun-47	4483 (2)	Aug-51	-	4738
10311	Jun-47	4500	c.Nov-50	-	4703
10312	Jun-47	4416	Apr-50	-	4607
10313	Jun-47	4509	c.Aug-51	-	4744
10314	15-Jul-47	4458	c.Aug-50	-	4685
10315	Apr-47	4513	c.Feb-51	-	4727
10316	Apr-47	4423	c.Jul-51	-	4746
10317	May-47	4469	c.Dec-c.50	-	4708
10318	May-47	4474	c.Jun-50	-	4679
10319	Apr-47	4414	c.Aug-51	-	4742
10320	24-Apr-47	4495	c.Apr-50	-	4672
10321	May-47	4489 /4497	c.Jul-50	-	4681
10322	Apr-47	4477 /4560	Mar-56	15041	5223
10323	May-47	4494	c.Jul-50	-	4678
10324	May-47	4489	Jan-51	-	4714
10325	Apr-47	4484	c.Apr-50	-	4604 (2)
10326	Jun-47	4504	c.Sep-51	-	4753
10327	Jun-47	4486	c.Sep-50	-	4693
10328	May-47	4507	Dec-c.51	-	4631
10329	Jun-47	4482	c.Oct-50	-	4698
10330	Jun-47	4443	c.Dec-c.50	-	4711
10331	May-47	4475	c.Nov-50	-	4702
10332	Jun-47	4401	c.Mar-53	15019	5019
10333	Jun-47	4516	Dec-c.51	15003	5003
10334	Jul-47	4468	c.Sep-50	-	4695
10335	Aug-47	4419	c.Jan-52	15008	5008
10336	Jul-47	4471	c.Mar-51	-	4726
10337	Aug-47	4480	Mar-50	-	4605 (2)
10338	Aug-47	4403	c.Jul-51	-	4734
10339	Aug-47	4447	c.Mar-51	-	4721
10340	Jul-47	4470	c.Mar-51	-	4720
10341	May-47	4501	c.Mar-51	-	4722
10342	May-47	4493	c.Dec-c.50	-	4710
10343	Jun-47	4461	c.Dec-c.50	-	4707
10344	Jun-47	4457	c.Jun-50	-	4673
10345	Jun-47	4417	c.Jul-51	15002	5002

On the rear of an 8-car train, 4 SUB unit no.4376 with the 17.29 Victoria to East Croydon (Balham all stations) on 8^th June 1972.

Note there are grab-handles above /beside the secondman’s observation light (offside) but not on the motorman’s side. Later deliveries of 4 SUB units had grab-handles on both sides.

© BloodandCustard

Compartment Units Nos.4355 - 4377
(‘Marys’)

Following on from the one‑hundred & sixteen augmentation trailers built up to June 1947, the next 4 SUB order number HO 3231 was for twenty-three complete units, all on new underframes from Lancing and constructed at Eastleigh to an identical internal layout to units nos.4111‑4120 as units 4121-4130 were still regarded as experimental at this stage and further evaluation of their interior layout was needed before producing more units of this type. Therefore units nos.4355‑4377 should have consisted of two 8-compartment motorcoaches, a 10-compartment trailer and a 9-compartment ‘pseudo-composite’ trailer.

However, a severe shortage of electrical equipment at this time saw these plans badly disrupted. Trailers for these units were completed following the 10230‑10345 batch of augmentation trailers during the summer of 1947, and a further batch of sixty-three augmentation trailers followed from January to July 1948. The motorcoaches were built between September 1947 and June 1948 and many had to be stored at Micheldever waiting fitment of traction equipment.

As a result, planned unit formations were not adhered to, and fourteen of the 10-compartment trailers and nine of the 9-compartment trailers were used for augmentation purposes, being replaced by cars from the following batch of sixty-three, numbered 10167‑10229. This batch of units eventually entered service in reverse numerical order starting with unit no.4377 in September 1947 and ending with unit no.4355 in July 1948.

Due to nine of the ‘pseudo-composite’ trailers being used for augmentation, units 4355 ‑ 4363 had this car replaced by a further 10-compartment vehicle. The first unit to appear, unit no.4377 included another experimental trailer car, an all‑open 10-bay saloon which featured unusual luggage racks with handrails at the gangway sides, also advertisement panels between the luggage rack and the seat back.

This batch of units all had EE339 motors fitted in a ‘Central‘ type motor bogie, and differed slightly in appearance from earlier units in that extra grab rails were fitted on cab ends above and beside the windows, some units having them fitted to both sides, some only on the offside. This was reportedly due to a shortage of brass for the hinges of the opening offside cab observation light so this light was fixed initially on this batch and the grab rails provided to assist staff in coupling /uncoupling operations.

Units were close-coupled within, using the standard suburban centre-buffer and three-link chain arrangement: this being bolted with shackles underneath the headstock (keeping the centre-buffer under compression). On cab ends there was the usual central drawhook with side buffers. The corridor trailer had a centre buffer at both ends; the non-corridor trailer had a buffer at the third-class end and a rubbing plate at the first-class end whilst both motorcoaches had rubbing plates.

One motorcoach on the last unit to appear (unit no.4355) also had experimental roller blind route indicators and the guard’s periscope was fitted with a wiper. If formed as intended, this batch of units should have seated four-hundred & twenty Third (MBT ninety-six, 10C TT one-hundred & twenty, 9C TT one-hundred & eight) and units nos.4364-4376 were in fact so formed.

Unit no.4377 seated four-hundred & two Third due to the inclusion of the all‑open trailer in place of the 10-compt. one and this car only seated one-hundred & two Third. Units nos.4355‑4363 seated four-hundred & thirty-two Third as they included two 10-compt. trailers. Interior trim of these units was as in the unit nos.4101 batch; they differed from the units nos.4111 batch by having hammock slung rather the bench type seating.

During first overhauls, units nos.4355 /4368 /4370‑73 /4376 & 4377 all received brown or maroon rexine panelling with toffee /custard paint whilst the remainder were given Formica partitions, plastic ceilings and ‘Hardec’ panelling. Units were repainted from green (with small yellow warning panels added from January 1964) into all‑over blue with full yellow ends, though quite a few (units nos.4358 /4365 /4367 /4369 /4372 & 4375) received the intermediate version with blue ends and small yellow panels between September 1966 and January 1967.

Units nos.4355 /4357 /4368 /4370 /4371 /4373 /4376 & 4377 gained full yellow ends with green livery, unit no.4360 being disbanded whilst still all‑green and the last of this batch still running in green livery was unit no.4368 (painted blue in March 1971).

This batch of units were among the earlier units to be withdrawn due to the fitment of EE339 motors and the large proportion of compartments and began to be withdrawn in 1972, displaced by SR type 2 HAP units downgraded to second class as 2 SAP and moved to the suburban area. They received the BR TOPS classification Class 405/1 shortly before withdrawal. The remainder (except unit no.4377) were withdrawn in 1973 and 1974 as further BR type 2 HAP units were displaced to the suburban area as 2 SAP by newly delivered 4 VEP units, most being initially stored at Lancing prior to electrical stripping at Selhurst.

Unit formations are as shewn below, with withdrawal date and key letter code for scrap dealer also shown.

Unit	New	MBT		10C TT		10C TT		MBT		Wdn date		Scrap
Diag. No.		2119	2014		2014		2119
Code		CH	DN		DN		CH
4355	6-Jul-48	10895	10221		10220		10896 10952^16		30-Apr-72		Jun-73 K
4356	24-Jun-48	10897	10219		10218		10898		22-Nov-75		Oct-76 S
4357	22-Jun-48	10899	10216		10217		10900		14-Jul-73		Mar-74 K
4358	17-Jun-48	10901	10214		10215		10902		19-Jan-74		May-74 W
4359	18-May-48	10903 10914	10210		10209		10904		22-Nov-75		Jul-76 C
4360	14-May-48	10905	10208		10207		10906		Sep-64		Disbanded
4361	May-48	10907	10205		10206		10908		22-Nov-75		Oct-76 M (2)
4362	26-Apr-48	10909	10199		10200		10910		22-Nov-75		Oct-76 M
4363	15-Apr-48	10911	10197		10198		10912		9-Feb-74		May-75 M
Unit	New	MBT	10C TT		9C TT		MBT		Wdn date		Scrap
Diag. No.		2119	2014		2314		2119
Code		CH	DN		DP		CH
4364	2-Apr-48	10913	10196		11461 10353^17		10914 10903 10811^18		22-Nov-75		Oct-76 S
4365	25-Mar-48	10915 11314	10173 10473		11462		10916 10921		15-Feb-69		Nov-69 T (3)
4366	15-Mar-48	10917	10172		11469		10918		22-Nov-75		Oct-76 S
4367	11-Feb-48	10919	10171		11470		10920		6-Oct-73		See notes
4368	2-Feb-48	10921 10860^19	10170		11468 8941^20 11468		10922		30-Apr-72		Feb-73 B
4369	27-Jan-48	10923 12664^21	10464 10359^22		11466		10924		6-Oct-73		Jul-74 K
4370	3-Jan-48	10925	10461		11467		10926		5-May-73		Sep-73 N
4371	31-Dec-47	10927	10462		11463		10928		6-Oct-73		Mar-75 K
4372	24-Dec-47	10929	10465		11464		10930		30-Apr-72		Oct-72 B
4373	Dec-47	10931	10455		11465		10932		19-Jan-74		Apr-74 W
4374	Nov-47	10933	10454		11460		10934 10967^23 10934		22-Nov-75		Oct-76 S
4375	21-Nov-47	10935	10457		11459		10936		22-Nov-75		Oct-76 S
4376	31-Oct-47	10937	10458		11458		10938		6-Oct-73		Jul-74 K
4377	Oct-47	10940	10463^24		11457		10939		22-Apr-76		See notes

Footnotes
16	9-Compt. MBS diagram 2118, code CE
17	Wooden roofed 10-Compt. TS, diagram 2013, code DN.
18	‘All-steel’ 2 HAL MBS, diagram 2127, code CJ.
19	Saloon MBS, diagram 2126, code CM.
20	10-Compt. TS, diagram 2013, code DN.
21	Saloon MBS, diagram 2126, code CM.
22	Wooden roofed TS, diagram 2013.
23	MBT code CF.
24	Saloon TTO, diagram 2018, code DR.

Key Letter Code for Scrap Dealers
B	Bird Group (Long Marston).
C	J. Cashmore Ltd (Great Bridge).
G	Marple & Gillott Ltd (Attercliffe).
K	A. King Ltd (Wymondham).
M	Milton Metals ^# T. W. Ward (Briton Ferry).
N	A. King Ltd (Norwich).
S	A. King Ltd (Snailwell).
T	T. J. Thomson & Son, Ltd (Stockton).
W	T. W. Ward Ltd (Beighton).

Unit no.4355 leaves Wimbledon for Hampton Court (30). Note the handrails beside and above both the motorman’s and secondman’s observation lights needed to change the headcode stencils as the latter was non-opening when new.

© Chris Wilson collection

Individual Unit Notes

4355	Unit commenced service 13-Jul-48. MBT 10895 damaged about July 1950 (details unknown) and repaired at Eastleigh between 3-Aug-50 and 28-Sep-50. Three cars of unit (not 10896) damaged about April 1957 (details unknown) and repaired at Lancing between 1-May-57 and 19-Aug-57. MBS 10896 temporarily exchanged with damaged 10834 (ex.4380) whilst this also repaired at Lancing. Unit involved in Herne Hill collision 1-Apr-60 (hit tender of 'C' class 31575) and MBS 10895 badly damaged also both trailers damaged. To Eastleigh for repair 31-May-60, 10895 with new cab end and using part of underframe from 2 HAL MBS 10798 (ex.2680). Unit released back into traffic 25-Jun-62. MBS 10896 damaged Mar‑72 (where?) and condemned, being scrapped by Bird Group (Long Marston) Feb‑73 as part of unit no.4106. Replaced by 10952, a wooden‑roofed 9-Compt. One-hundred & eight seat MBS ex. unit no.4106; unit now seated four-hundred and forty-four. Unit withdrawn 30-Apr-72 and initially stored at Surbiton. Following stripping at Selhurst unit formed as a 6-car with both trailers from unit no.4378 at Clapham Yard before returning to Selhurst, thence moving to Horsham for storage 16-Jun-72. Unit hauled to Micheldever 23-Dec-72 and hauled away for scrapping to A. King Ltd (Wymondham) 19-Jun-73 from Basingstoke.
4356	Unit commenced service 1-Jul-48. MBS 10898 damaged by fire about January 1960 (details unknown) and repaired at Lancing between 11-Feb-60 and 12-May-60. Unit moved from Wimbledon Park to Lancing for storage 27-Feb-74 and withdrawn 2-Mar-74. Unit remained stored at Lancing where it was slightly fire damaged until moved to Selhurst for stripping 21-May-75. However, it was officially reinstated 2-Aug-75 but not repaired or used and withdrawn again 22-Nov-75. Hauled to Micheldever for storage Feb‑76 and moved away for scrapping to A. King Ltd (Snailwell) 13-Oct-76.
4357	Unit commenced service 1-Jul-48. Unit in collision with headshunt buffers at Effingham Junction 17-Jul-62 and MBS 10900 damaged, repaired at Wimbledon Park. Unit in collision with unit no.4643 at Wimbledon Park 9-Jul-73 and MBS 10900 damaged; unit withdrawn 14-Jul-73. Moved to Selhurst for stripping by Oct‑73 and hauled away for scrapping to A. King Ltd (Wymondham) from Clapham Yard 26-Feb-74.
4358	Unit commenced service 24-Jun-48. Unit at Eastleigh for ‘light repairs’ between 13-Jan-61 and 4-Apr-61 (details unknown). Unit withdrawn 19-Jan-74 and after stripping at Selhurst hauled to Micheldever for storage 4-Feb-74 and moved away for scrapping to T. W. Ward Ltd (Beighton) 22-Apr-74, detached (at Tinsley?) and arrived 1-May-74.
4359	Unit commenced service 24-May-48. Unit in collision with unit no.4364 at Swanley 7-Jun-58 and MBS 10903 damaged and exchanged with 10914 (ex.4364) from 18-Jun-58. Unit used for Xmas mails traffic in December 1973 then stored at Hampton Court and moved to Lancing for storage 27-Feb-74 from Wimbledon Park, and withdrawn 2-Mar-74. Unit officially reinstated 2-Aug-75 but not used and withdrawn again 22-Nov-75 and taken to Selhurst for stripping by Jan‑76. Eventually disposed of for scrapping to J. Cashmore Ltd (Great Bridge) 23-Jul-76.
4360	Unit commenced service 27-May-48. Unit in head-on collision with unit no.5247 on shunt neck at Effingham Jct 28-Jul-64 and MBS 10905 badly damaged, cab and brakevan demolished. Unit hauled to Eastleigh 30-Aug-64. Both MBSs 10905 & 10906 arrived Eastleigh 3-Dec-64 and 10905 condemned 5-Dec-64 and broken-up at Eastleigh works about that date. MBS 10906 to unit no.4720 from 16-Dec-64 after being fitted with an ‘Eastern’ type motor bogie. Both trailers arrived Eastleigh 6-Dec-64 from Chart Leacon and were renumbered, 10207 as 15082, 10208 as 15081 then sent for store (at Micheldever?) until returned to Eastleigh 20-Apr-65 and overhauled and converted to EP braking and both to ‘new’ unit no.5261 from 6-Aug-65.
	4361 stored at Crystal Palace (25^th November 1974) [Coupled to 4625] © Graham Court
4361	Unit commenced service 13-May-48. MBS 10907 minor damage when motor bogie took two roads leaving Epsom sidings 12-Dec-62. Unit withdrawn 11-May-74 and stored at Crystal Palace, officially reinstated 2-Aug-75 but not used and moved back to Selhurst 22-Nov-75 and withdrawn that day. MBS cars then used for conversion to de-icing motorcoaches for unit no.004. 10907 renumbered ADB975586, 10908 renumbered ADB975587, both from 13-Aug-77 though ready in June. Both trailers formed into 6-car ‘4112’ for disposal.
4362	Unit commenced service 4-May-48. MBS 10910 slightly damaged when took two roads in Streatham Hill depot 13-Aug-63. Unit moved from Wimbledon Park to Lancing for store 29-Sep-73 and withdrawn 6-Oct-73. Officially reinstated 2-Aug-75 but not used and taken to Selhurst for stripping and withdrawn again 22-Nov-75. Unit then hauled to Hove for store by 5-Apr-76 and on to Micheldever for further storage, arriving there by Aug‑76 including damaged 4 EPB TS 15072, though this was removed before unit was sent away for scrapping to Milton Metals ^# T. W. Ward (Briton Ferry) 19-Oct-76.
4363	Unit commenced service 24-Apr-48. Unit used for Xmas mails traffic in December 1973 and withdrawn 9-Feb-74, moved to Eastleigh for stripping 17-Feb-74 and taken to Micheldever for storage 14-May-74. Moved away for scrapping to Milton Metals at T. W. Ward’s yard at Briton Ferry 11-Mar-75, though not delivered to scrap dealer until 7-May-75.
4364	Unit commenced service 12-Apr-48. Unit in collision with unit no.4359 at Swanley 7-Jun-58 and MBS 10913, TS 10196 and TS 11461 badly damaged. MBS 10914 to unit no.4359 and replaced by damaged 10903 (ex.4359) from 18-Jun-58. Damaged vehicles then taken to Ashford for underframe repairs to 10913 and 10196. Released 20-Apr-59 to Lancing where TS 11461 repaired from 27-Apr-59, other cars stored until also under repair at Lancing from 5-Nov-59 and unit released back to traffic in new formation 24-Mar-60. Unit in further collision at Hampton Court Apr‑70 and MBS 10903 and 9-compt. TS 11461 both withdrawn, 10903 being withdrawn 9-May-70 and cut‑up at Wimbledon Park by 22-Aug-70. Damaged unit taken to Micheldever‑ by Jun‑70 as a 3-car for reform, TS 11461 stored at Micheldever‑ and withdrawn 9-Oct-71 and scrapped there by 26-Aug-76. Replaced by ‘all-steel’ 2 HAL MBS 10811 (ex.2693) seating eighty-four and 10-compt. wooden-roofed TS 10353 (ex.7TC unit no.701), and reformed unit moved from Micheldever‑ to Selhurst 27-Jul-70 for overhaul. Overall seating capacity unchanged at four-hundred & twenty, unit now one ton‑lighter in weight at 141 tons. Unit used for Xmas mails traffic in December 1973 then stored at Hampton Court and moved to Lancing for storage 28-Feb-74 from Wimbledon Park, and withdrawn 2-Mar-74. Moved to Selhurst for stripping 21-May-75 but officially reinstated from 2-Aug-75 though not repaired or used and withdrawn again from 22-Nov-75. Hauled to Micheldever‑ arriving 28-Apr-76 for storage and away for scrapping to A. King Ltd (Snailwell) 12-Oct-76.
4365	Unit commenced service 6-Apr-48. Unit in collision with unit no.4627 at Wimbledon station 15-Feb-68 and disbanded. MBS 10916 damaged, MBS 10915 exchanged with damaged 11314 (ex.4627) and unit to Eastleigh for C3 overhaul and repair 19-Nov-68. Both trailers 10173 and 11462 overhauled and to unit no.4379 from Jun‑69 and replaced by damaged TS 10473 (ex.4379) and MBS 10921 (ex.4368). Both MBS cars 10916 & 11314 beyond repair and withdrawn 6-Jul-68. 10916 scrapped at Eastleigh works c.Sep‑69 (possibly by Meon Valley Metals). Unit then for scrapping with all cars damaged as a 3-car, moving from Basingstoke to T. J. Thomson & Son, Ltd (Stockton) 19-Nov-69.
4366	Unit commenced service 23-Mar-48. Unit withdrawn 16-Feb-74 and stored at Lancing until moved to Selhurst for stripping 21-May-75. Unit officially reinstated 2-Aug-75 but not used and withdrawn again 22-Nov-75. Hauled to Micheldever arriving 28-Apr-76 for storage and moved away for scrapping to A. King Ltd (Snailwell) 12-Oct-76.
055 (ex.4367) Ashford Works Open Day (18^th August 1978) © Tony Watson
4367	Unit commenced service 19-Feb-48. Unit damaged about July 1967 (details unknown) and to Selhurst for repair 1-Aug-67. Unit out of use by 1-Oct-73 and moved to Lancing for store 4-Oct-73 and withdrawn 6-Oct-73 then moved to Selhurst 26-Oct-73 and converted in early 1974 to Instruction Unit no.055. All internal partitions removed and gangways fitted between vehicles within the unit. MBS cars fitted out as classrooms, trailers with equipment demonstrations. All jumper cables removed from unit ends; roller blinds and EE507 motors fitted. All cars renumbered in departmental series:- 10919 to ADB975319, 10171 to ADB975320, 11470 to ADB975321 and 10920 to ADB975322 with unit released Nov‑74. Coaches officially renumbered from 15-Mar-75. Unit survived in this form until withdrawn 6-Nov-85 and sent for scrapping to C. F. Booth (Rotherham) from Stewarts Lane 8-May-86 though unit spent a period stored in Tinsley Yard and not delivered until Jul‑87.
4368	Unit commenced service 13-Feb-48. Unit at Eastleigh for unspecified repair between 7-Nov-50 and 15-Feb-51 (possible damage?). Unit in collision with unit no.4661 about May 1966 (details unknown) and 9-compt. TS 11468 damaged and temporarily exchanged with 10-compt. TS 8941 (ex.4661). Reverted to original formation about November 1966. Unit derailed at Whitton Jct 18-Aug-67 and MBS 10921 down bank and not recovered until Oct‑67. This car condemned 8-Feb-69 and scrapped as part of ‘4365’ (as a 3-car) Nov‑69. Replaced in unit no.4368 from Mar‑68 by MBS 10860 (ex.4282) an eighty-two-seat saloon vehicle. Unit then seated four-hundred & six and weighed 138 tons. Unit withdrawn 30-Apr-72 and initially stored at New Cross Gate then moved to Selhurst for stripping and hauled to Horsham for storage 16-Jun-72. Then moved to Clapham Yard 13-Nov-72 and on to Micheldever 2-Dec-72. Moved to Basingstoke 15-Feb-73 prior to moving for scrapping to Bird Group (Long Marston) the next day.
4369	Unit commenced service 10-Feb-48. MBS 10924 along with 9-Compt. TS 11466 badly damaged in converging collision with 2 BIL unit no.2007 at Horsham 2-Jul-61, unit stored at Hassocks then repaired at Eastleigh between 22-Mar-63 and 10-May-63. Unit slightly damaged about July 1967 (details unknown) and MBS 10924 and TS 11466 damaged, unit to Eastleigh 27-Jul-67 and released 4-Aug-67. Unit in further collision at Strawberry Hill Mar‑68 and MBS 10923 and TS 10464 both damaged and withdrawn 12-Apr-69, unit to Micheldever for store, MBS 10924 + TS 11466 to Eastleigh for repair and overhaul 1-Apr-69, damaged cars scrapped by T. J. Thomson & Son, Ltd (Stockton) Nov‑69 formed as a 3-car with MBS 10859 (ex.4282). Replaced in unit no.4369 by eighty-two-seat saloon MBS 12664 (ex.4590 and via units nos.2700 & 4282) and 10-compt. wooden‑roofed TS 10359 (ex.4338 and via units nos.2926 & 4282) and unit released in new formation 17-Apr-69. Unit then seated four-hundred & six and weighed 138 tons. Unit withdrawn 13-May-72 but reinstated. Unit withdrawn 6-Oct-73, stored at Micheldever by 30-Jan-74 and moved for scrapping to A. King Ltd (Wymondham) from there 3-Jul-74.
4370	Unit commenced service 22-Jan-48. Unit ex. repairs at Eastleigh 22-Mar-50 (possible damage?). Unit withdrawn 5-May-73 due to damage (details unknown), storage details after withdrawal unknown, moved for scrapping to A. King Ltd (Norwich) (probably from Norwood Yard) 24-Jul-73.
4371	Unit commenced service 12-Jan-48. Unit stored briefly at Lancing from 2-Oct-73, withdrawn 6-Oct-73 and moved to Selhurst 17-Oct-73 for stripping. Hauled to Clapham Yard Dec‑73 for storage and on to Micheldever by 30-Jan-74. Moved away for scrapping 28-Aug-74, not arriving at A. King Ltd (Wymondham) until 15-Mar-75 after a period at Thetford.
4372	Unit commenced service 6-Jan-48. Three cars of unit damaged c.May‑70 (details unknown) and unit stored at Selhurst until repaired there between 19-Jun-70 and 30-Aug-70. Unit withdrawn 30-Apr-72 and after stripping at Selhurst, unit hauled to Shalford 23-May-72 and on to Guildford 31-May-72 for storage. Moved to Micheldever 5-Jul-72 and then to Basingstoke 9-Oct-72 prior to moving away for scrapping to Bird Group (Long Marston) 18-Oct-72.
4373	Unit commenced service 29-Dec-47. MBS 10932 derailed on catch points at Coulsdon North 23-Apr-64, repaired at Selhurst? Unit moved from Wimbledon Park to Lancing 29-Sep-73 for store and withdrawn 6-Oct-73 but reinstated 8-Dec-73 following loss of units nos.4381 & 4640 in a depot fire. After withdrawal again 19-Jan-74 unit stripped at Selhurst and hauled to Micheldever 4-Feb-74 for storage and moved away for scrapping to T. W. Ward Ltd (Beighton) 22-Apr-74.
4374	Unit commenced service 9-Dec-47. MBT 10934 damaged in collision with units nos.4129 & 4117 at Epsom 28-Jul-49 and repaired by about May‑51 thence to unit no.4114, replaced by 10967 (ex.4114) from c.21-Sep-49. Reverted to original formation Jan‑53. After withdrawal 11-May-74 unit stored at Lancing where it remained stored until moved to Selhurst for stripping 21-May-75. Unit officially reinstated 2-Aug-75 but not repaired or used and withdrawn again 22-Nov-75. Hauled to Micheldever for storage Feb‑76 and moved away for scrapping to A. King Ltd (Snailwell) 11-Oct-76.
4375	Unit commenced service 1-Dec-47. Unit withdrawn from passenger use 1-Oct-73 but retained for Xmas mails and parcels traffic until withdrawn 2-Mar-74. Unit moved from Wimbledon Park to Lancing for storage 27-Apr-74 where it remained stored until moved to Selhurst for stripping 21-May-75. Unit officially reinstated 2-Aug-75 but not repaired or used and withdrawn again 22-Nov-75. Hauled to Micheldever for storage Feb‑76 and moved away for scrapping to A. King Ltd (Snailwell) 13-Oct-76.
4376	Unit commenced service 12-Nov-47. Unit derailed in Wimbledon Park depot 13-Jul-62 and MBS 10937 damaged, repaired at Lancing between 27-Jul-62 and 20-Aug-62. Unit withdrawn 6-Oct-73 and after stripping at Selhurst, unit stored at Micheldever by 30-Jan-74 and moved away for scrapping to A. King Ltd (Wymondham) 3-Jul-74.
4377	Unit commenced service 9-Oct-47. Both MBS cars 10939 and 10940 to 4 LAV unit no.2932 from 23-May-67 until Feb‑68 and trailers stored in meantime at Micheldever with unit no.2932 MBS cars 10523 and 10524. Unit withdrawn 22-Apr-76 and TSO 10463 exchanged with TS 10144 (ex.4277) from Jun‑76 and unit stored at Norwood Yard. Both MBS cars stored until 14-Jul-80 when used for conversion to de-icing motorcoaches for unit no.012. 10939 renumbered ADB975604 and 10940 renumbered ADB975605 (both from Dec‑81). Both trailers scrapped by Bird Group (Long Marston) Sep‑81 as part of 8-car ‘4606’.

On a service via Cobham (headcode 42), 4 SUB unit no.4385 enters Guildford off the Guildford New Line in 1955.

© Chris Wilson collection

The fourteen 10-Compt. TTs originally intended for this batch and used for augmentation instead were as follows:

Car	New	Into traffic	To pre-war	Disbanded	New No.	To unit
Diag. No.	2014		unit/s
Code	DN (SUB) or DU (EPB conversions).
10449	Aug-47	25-Sep-47	4569 /4333	6-May-60	-	4607
10450	Aug-47	11-Sep-47	4552	8-Sep-56	15059	5241
10451	Aug-47	29-Sep-47	4556	Aug-56	15055	5237
10452	Aug-47	26-Sep-47	4572	12-May-56	15045	5227
10453	Aug-47	24-Sep-47	4551 /4113 /4551	Nov-56	15067	5249
10456	Oct-47	Oct-47	4521	27-Apr-53	15025	5025
10459	Oct-47	8-Oct-47	4564	25-Feb-56	15036	5218
10460	Oct-47	23-Oct-47	4579	15-Aug-53	15033	5033
10466	Sep-47	18-Sep-47	4537	19-May-56	15046	5228
10467	Sep-47	19-Sep-47	4561	21-Jul-56	15060	5242
10468	Sep-47	19-Sep-47	4549	26-May-56	15047	5229
10469	Sep-47	22-Sep-47	4532 /4548	29-Sep-56	15064	5246
10470	Sep-47	1-Sep-47	4520	18-Feb-56	15034	5216
10471	Sep-47	25-Sep-47	4527	14-Jul-56	15053	5235

The nine 9-Compt. TTs originally intended for this batch and used instead for augmentation were as follows:

Car	New	Into traffic	To pre-war	Disbanded	New No.	To unit
Diag. No.	2314		unit/s
Code	DP (SUB) or DU (EPB conversions).
11448	Aug-47	23-Sep-47	4602 /4610 /4591 /4421	14-Oct-50	-	4696
11449	Aug-47	8-Sep-47	4614 /4589	7-Jun-51	-	4728
11450	Aug-47	8-Sep-47	4613 /4477	8-Sep-50	-	4688
11451	Aug-47	9-Sep-47	4605 /4590	17-Mar-56	15038	5220
11452	Aug-47	26-Sep-47	4603 /4592	24-Aug-51	-	4739
11453	Aug-47	23-Sep-47	4601 /4587	4-Jul-51	-	4733
11454	Aug-47	2-Oct-47	4606 /4573	Nov-51	15005	5005
11455	Aug-47	1-Oct-47	4604 /4593	28-Apr-51	-	4723
11456	Aug-47	2-Oct-47	4607 /4608 /4594 /4313	circa. 31-May-60	15080	5008

Augmentation Trailers
10167 - 10229

The final batch of sixty-three augmentation trailers were built at Eastleigh, on new underframes from Lancing between January and October 1948 and were again 10-Compartment vehicles seating one-hundred & twenty and weighing 28 tons as previously. The first three vehicles were to order number HO 3386, the remainder to order HO 3463.

Twenty-three had to be used to make up the shortfall of trailers in the unit no.4355‑4377 batch (as mentioned above), the remainder went to augment pre-war 3-Car Motor Units as intended which were numbered in the series 4517‑4614 although some numbers were not used and no more than sixty-three units existed at any one time.

Many of these augmented units started to be withdrawn after a relatively short time for their underframes to be recovered for use later in the 4 SUB and 4 EPB construction programme. There were various reforms so that these augmentation trailers often saw service in several pre-war units before all (except two) were converted to EP braking and used in new 4 EPB units. However, two units were used in 4 SUB units nos.4736 & 4748. Details were as follows those cars not used for augmentation being marked with * after car number.

Car	Date New	Date into	To pre-war	Unit	New No.	To Unit
Diag. No.	2013	traffic	unit(s)	Disbanded
Code	DN (SUB) or DU (EPB conversions).
10167	Jul-48	19-Jul-48	4534	14-Jul-56	15054	5236
10168	Jul-48	20-Jul-48	4550	c.12-Dec-56	15074	5256
10169	Jul-48	14-Jul-48	4568	7-Jun-52	15012	5012
10170*	Feb-48	13-Feb-48	4368	-	-	-
10171*	Feb-48	19-Feb-48	4367	-	-	-
10172*	Mar-48	22-Mar-48	4366	-	-	-
10173*	Mar-48	6-Apr-48	4365	-	-	-
10174	Jul-48	4-Aug-48	4571	Jun-52	15011	5011
10175	Aug-48	17-Aug-48	4517	c.27-Apr-53	15022	5022
10176	Jul-48	4-Aug-48	4553	15-Jun-56	15049	5231
10177	Aug-48	16-Aug-48	4519	c.24-Mar-53	15020	5020
10178	Jul-48	29-Jul-48	4543	15-Sep-56	15062	5244
10179	Jul-48	29-Jul-48	4558	c.27-Nov-56	15072	5254
10180	Oct-48	5-Oct-48	4562 /4531	10-Nov-56	15070	5252
10181	Sep-48	1-Oct-48	4584 /4570	Apr-51	-