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,
Upminster Bridge Upminster Bridge Upminster Bridge is a crossing of the River Ingrebourne carrying the A124 road between the suburbs of Hornchurch and Upminster in northeast London, England. The bridge is known to have existed since at least 1375 and the current brick bridge was opened in 1892, replacing a series of wooden bridges. It gave its name to the nearby Upminster Bridge tube station, which opened in 1934, and has also been applied to the neighbourhood around the station in the London Borough of Havering. The bridge has been alternatively known as Bridge House Bridge and Lower Bridge, with "Bridge House"