London Underground L Stock London Underground L Stock London Underground L Stock was a clerestory-roofed rail stock built for the District line in 1932 and subsequently absorbed into the London Underground Q Stock, being redesignated Q31 Stock. The L Stock trains were built to provide additional rolling stock for the eastward extension of the District Line from Barking to Upminster. Two new electrified tracks were added parallel to the existing steam-operated LMS lines, including several new stations such as Upminster Bridge. Forty-five cars were built by the Union Construction Company, eight were driving motor cars and the rest were trailers. The eight motor cars,
Wimbledon station taking over the West Anglia Main Line north of there). This would provide another set of transport links for the area and direct services to and . There is also a proposal for an extension of the Tramlink services running from Wimbledon to Sutton via Morden, St. Helier and Rose Hill. The typical off-peak service (Monday to Saturday) frequency is: National Rail London Underground Wimbledon station Wimbledon is a National Rail, London Underground, and Tramlink station located on Wimbledon Bridge, Wimbledon in London, and is the only London station that provides an interchange between main line rail, Underground, and Tramlink.