Beginning his wage-earning years as a schoolteacher, Briton Derek Farr became a stage actor in 1937 and a movie leading man two years later. Upon returning from World War II service, Farr found that his days as romantic lead were numbered (save for occasional films like Shop at Sly Corner ); even so, he remained very much in demand for character roles. Farr co-starred as Group Captain J.N.H. Whitworth in The Dam Busters, the single most popular British film of 1955. Derek Farr's second wife was sprightly leading lady Muriel Pavlow, with whom Farr appeared in such films as Shop at Sly Corner and Doctor at Large (1957).