4-TCs could also work in multiple with Class 73/1s and Class 74s in a push-pull manner using the twentyn seven-wire EPB control system . If other (incompatible) locomotives were used then the 4-TCs were plain hauled stock.
|Number built:||126 (28 4-car sets, 3 3-car sets, 2 spare vehicles plus 3 later additions)|
|Built:||1966-7, 1974 (rebuilds from Mark 1 coaching stock)|
|Formation:||Driving Trailer Standard Open (DTSO)+Trailer First Corridor (TFK)+
Trailer Brake Standard Corridor (TBSK)+DTSO
3-TC same except for no TFK
Although primarily used on Waterloo-Weymouth services 4-TCs and 3-TCs were also used on elsewhere such as London Waterloo to Salisbury and Clapham Junction to Kensington Olympia services. Electrification finally reached Weymouth in 1988 with the service taken over by Class 442s though the 4-TCs remained in service until 1992.
The 3-TCs were augmented to four coach sets in 1974 by adding the missing TFK . The 4-TCs were Class 491 and the 3-TCs Class 492 under TOPS though later on all were reclassified as Class 438 .
A number of vehicles have been preserved including two complete 4-TC sets, one of which is owned by London Underground and carried a "faux teak" vinyl livery for operation with preserved locomotives for a time though is now in London Transport red.
|The LU 4-TC set in current London Transport red|
|The LU 4-TC in the former faux teak livery|
|Connecting up to 68 025|
|More familiar 4-TC motive power, a Class 33|
|The LU 4-TC with a Class 66|
|The LU 4-TC at Kidderminster SVR|
 Colin J. Marsden (ed.), "4-REP, 3-TC, 4-TC", Modern Locomotives Illustrated No. 220 August-September 2016 (BR Southern Region Electric Multiple Units) p. 38
 John Glover, BR Diary 1958-1967 (Ian Allan, 1987) p. 120
 David Brown, Southern Electric Vol. 2 (Capital Transport, 2010) p. 208
 Brian Haresnape & Alec Swain, Third Rail DC Electric Multiple Units (Ian Allan, 1989) p. 67
 Colin J Marsden, DMU and EMU Recognition Guide (Ian Allan, 2013) p. 375