London Underground Standard Stock

The London Underground Standard Stock was the title applied to a variety of tube stock built between 1923 and 1934, all with the same basic characteristics but some detailed differences, and sometimes called 1923 Tube Stock or Pre 1938 Stock. Most of it replaced the first generation Gate Stock tube trains or supplied additional trains for extensions of the 1920s and early 1930s, such as the Hampstead line to Edgware and Morden. Cars were motor cars with a driver's cab and a switch compartment taking about a third of the length, trailers, and control trailers with a cab but no motor, all with air-operated sliding doors. Several builders took part, and Metropolitan Carriage Wagon and Finance received an order for 112 cars in 1926 and another for 136 cars in 1927.