Construction
The design and manufacture was a collaboration between several companies. BTH (the main contractor) provided electrical equipment, Paxman supplied the power units, and Clayton supplied bogies and superstructure, with the frame construction and final assembly taking place at Yorkshire Engine's Sheffield works. These ten locomotives, numbered D8200–D8209, entered service between November 1957 and November 1958.
The design showed sufficient promise for a repeat order for 34 more locomotives to be placed soon afterwards. These locomotives, numbered D8210–D8243 and built by Clayton at Hatton, Derbyshire, were delivered between October 1959 and February 1961.
Read more about this topic: British Rail Class 15
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