Genesis 4w - Metropolitan Railway Varnished Teak - Twin Pack DTo provide stock for the new extension to Aylesbury, the Metropolitan Railway ordered 32 four wheeled carriages from Cravens, which entered service in 1892. Intended to serve both Aylesbury and Chesham, the eight car rake was split into two sets of four, each comprising a 2nd Brake, 1st, 3rd, and 3rd Brake. The two sets were divided between the 3rd Brake and 2nd Brake, and all eight sets ran in the timetable until 1905, when they were sold on to the