The cars were used on the Piccadilly line from 1937 to 1940. During World War II all the 1935 Stock cars were stored at Cockfosters depot. After the war the streamlined cars were sent to Acton works, where they were rebuilt into trailer cars, used with the 1938 stock. They were eventually withdrawn between 1972 and 1976. The unit with the flat fronts re-entered service and was also used with the 1938 stock, the main difference between the 1935 Stock and 1938 stock DMs being that the driver's door on the 1935 stock was taller, extending into the roof.