Class 411 (BR Eastleigh Express Services 4-Car) 4-CEP

The Mark 1 coach based Class 411 4-CEP (Corridor Electro Pneumatic) electric multiple units were built for an extension of the Southern Region third-rail DC electrification network into Kent [1]. Later on in their service lives they were also used on routes into Hampshire and Sussex. The Class 411s were built alongside the very similar Class 410 4-BEPs which had a buffet [2].
Preserved 1198 on the Chinnor & Princes Risborough Railway

Information
Number built: 440 (110 4-car sets)
Built: 1956-63
Builder: BR Eastleigh
Engine: 4 EE507 traction motors (750v DC third rail)
Power: 1, 000 hp (746 kW)
Formation: Original : Driving Motor Brake Standard (DMBS)+Trailer
Composite (TC)+Trailer Standard (TS)+DMBS
Refurbished : Driving Motor Standard Open (DMBO)+
Trailer Brake Composite (TBC)+Trailer Standard Open
Lavatory (TSOL)+DMSO
411/4 and /9 : DMSO+TBC+DMSO

The Class 411 fleet were given a mid-life update (and renamed the Class 411/5) in the early 1980s at BR Swindon, changes included removing asbestos and moving the guard's compartment from the motor cars to one of the trailers. The trailers also received refurbished Commonwealth bogies from withdrawn loco-hauled coach stock and improved windows [3]. Public address systems and Mark 3 style seats were also installed though some passengers complained that the latter were not as comfortable as the old seats! [4] 

Nineteen Class 411s were converted to 3-car sets (hence 3-CEP) with the loss of the TSO trailer for use on less busy routes, these were re-designated Class 411/9 [5]. A small number were also fitted with improved high-speed bogies (Class 411/6). Some 4-BEPs were also converted into 4-CEPs by removing the buffer facilities.


The Class 411s survived into the privatisation era and served with the Connex and South West Trains franchises before finally being withdrawn in 2005 [6] after forty nine years service making them the longest serving Mark 1 based EMUs. A number of sets and cars have been preserved.

1198 at Chinnor

Aboard 1198

Front view of 1198

View of the cab

Another view of 1198 at Chinnor


[1] Colin J. Marsden, DMU and EMU Recognition Guide (Ian Allan, 2013), p. 312
[2] R.L. Vickers, DC Electric Trains and Locomotives in the British Isles (David & Charles, 1986), p. 79
[3] Brian Haresnape & Alec Swain, Third Rail DC Electric Multiple Units (Ian Allan, 1989), p. 46
[4] John Glover, "EMU Refurbishing", BR Diary 1978-1985 (Ian Allan, 1985), p. 31
[5] Marsden, Recognition Guide, p. 313
[6] 4-car Express Units (4Cep and 4Bep) and Motor Luggage Vans (MLV), Southern Electric Group <http://www.southernelectric.org.uk/features/historical-features/brfleet_cep.html>