Career
He made his film debut as Edith Evans"s footman in Thorold Dickinson"s classic The Queen of Spades (1949). Derby had a regular role as Scott-Erskine in the British Broadcasting Corporation"s The Omega Factor, and also starred in Doctor Finlay"s Casebook, Z-Cars, The Saint, Sutherland"s Law, Play for Today, and many other British television shows.