SR Class 2SL

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Southern Railway 2-SL
In service 1929–1954
Built at Peckham Rye Works
Replaced South London Line stock
Constructed 1929
Entered service May 1929
Number built 8
Number scrapped 8
Formation DMBT+DTC
Fleet numbers 1901–1908, later 1801–1808
Capacity 16 first class,
108 third class
Operator(s) Southern Railway,
British Railways
Train length 127 ft 2 in (38.76 m)
Width 9 ft 6 in (2.90 m)
Traction system Metropolitan-Vickers
Power output 550 hp (410.13 kW)
UIC classification Bo′2′+2′2′
Braking system(s) Automatic air
Coupling system Screw-link
Multiple working Standard SR system
Track gauge 4 ft 8 12 in (1,435 mm)

The Southern Railway (SR) gave the designation 2-SL to the small fleet of electric multiple units dedicated for use on the South London lines. None of these units survived long enough in British Rail ownership to be allocated a TOPS class.


The 2-SL (2-car South London stock, numbers 1801–1808) units were rebuilt in 1929 from the Driving Motor cars originally used in ex-LBSCR AC electric SL stock. They were intended for use on the South London lines. Originally these units had some First Class accommodation in the Driving Trailer car, but this was later declassified to Third Class only. The units were numbered 1901–1908 before 1936, when those numbers were reused for new 2-BIL units. At the same time, 4-SUB unit number 1801 was renumbered 1600.


Initial formations of these units were as follows:

Unit Numbers DMBT DTC
1901–1908 / 1801–1808 8723–8730 9751–9758


The majority of these units were withdrawn in 1954, the exceptions being 1802 (in 1951) and 1807 (destroyed in 1940 during a World War II air raid). All were subsequently scrapped.


  • Marsden, Colin J. (1983). Southern Electric Multiple-Units 1898–1948. Shepperton, Surrey: Ian Allan Limited. pp. 22–23. ISBN 0-7110-1253-9.