The Metropolitan Railway D Class was a group of six 2-4-0T locomotives built for the Metropolitan Railway in 1894-1895 by Sharp, Stewart and Company.
Two locomotives were used on the Verney Junction-Aylesbury section. The other four ran between Aylesbury and Baker Street and were fitted with condensing apparatus, but this was later removed.[2]
The class was withdrawn starting in 1920. Some were sold, while others were scrapped, but none were ultimately preserved.[1]