Derek James Fowlds (2 September 1937 – 17 January 2020) was an English actor. He was best known for playing "Mr. Derek" in The Basil Brush Show, Bernard Woolley in Yes, Minister/Yes, Prime Minister, and Oscar Blaketon in Heartbeat.
He also made guest appearances in Armchair Theatre, Z Cars, Dr. Finlay's Casebook, The Liver Birds, Minder, Inspector Morse, Boon, Van der Valk, The Darling Buds of May, The Detectives, CASUAL+Y and Doctors.