London Underground D78 Stock total of five 3-car sets, to be built as BMMUs, in June 2018. London Underground D78 Stock The London Underground D78 Stock, commonly referred to as D Stock, was a type of sub-surface rolling stock which operated on the District line of the London Underground, except on the Wimbledon to Edgware Road service. Following the withdrawal of the C Stock in June 2014, these were the oldest subsurface trains in service on the London Underground. The first units were withdrawn in January 2015 with the last withdrawn on 21 April 2017. The D stock was ordered in 1976 to replace
South Wimbledon tube station South Wimbledon tube station South Wimbledon is a London Underground station in South Wimbledon, a suburb of Wimbledon in south-west London. The station is on the Northern line, situated between Colliers Wood and Morden stations. It is located on the corner of Merton High Street (A238) and Morden Road (A219). South Wimbledon is on the boundary between Travelcard Zone 3 and Zone 4. The station was opened on 13 September 1926 as part of the Morden extension of the City & South London Railway south from Clapham Common. On the original plan it had the name "Merton Grove". For geographical