Brown Derby (5 May 1914 – 17 July 2000) was a Scottish stage, film and television actor. He made his film debut as Edith Evans's footman in Thorold Dickinson's classic The Queen of Spades (1949). He played Sergeant Roberts, too, in Suspended Alibi. Derby had a regular role as Scott-Erskine in the BBC's The Omega Factor, and also starred in Dr. Finlay's Casebook, Z-Cars, The Saint, Sutherland's Law, Play for Today, Take The High Road and many other British television shows. (Via Wikipedia)
