HST power car No. 43085 at Derby Locomotive Works on February 24th 1984 HST power car No. 43085 'City of Bradford' on the traverser at Derby Locomotive Works on February 24th 1984., , The HSTs may not have been the most popular form of traction for those of us that enjoyed the Modernisation Plan era diesels., , But they represent an iconic mode of travel known to several generations of the travelling public. Yet as Derby Locomotive Works slipped into its twilight years these fine locomotives continued to receive repairs and repaints at Derby until sometime during 1988., , Original photographer unknown.