SR Class CW

The Southern Railway class CW, the Coulsdon and Wallington stock, was a fleet of AC electric multiple units planned by the London, Brighton and South Coast Railway, delayed by the First World War and the grouping, and introduced by the Southern Railway. Built in 1923 and 1924 as the last electric train stock for the overhead lines of South London, about a hundred carriages ran in five-car formations. The Metropolitan Carriage, Wagon and Finance Company built them at Birmingham: 21 motor luggage vans nicknamed Milk Vans, each with four 250 horsepower GEC traction motors, 60 driving trailers and 20 trailers. After the overhead wires gave way to the 660 volt DC third rail, the carriages were rebuilt and the motor luggage vans became goods train brake vans.