The D Stock was built by Metropolitan Amalgamated Railway Carriage & Wagon in Saltley, England for the District Railway in 1912.

These units were very similar to the earlier B and C Stock trains.

The remaining cars were largely confined to the Olympia shuttle service and were withdrawn from passenger service by the late 1950s.

One continued in use for a time in grey livery as a "Stores Carrier" motor car SC637, before being finally broken up in May 1963.

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