Derek Newark (8th June 1933 - 11th August 1998) appeared on Coronation Street as Detective Constable Bill Sharp, making intermittent appearances between July 1966 and September 1971.

His other credits include Doctor Who, Callan, Dad's Army, Rising Damp, The Avengers, The Saint, Return of the Saint, The Persuaders!, Man in a Suitcase, The Adventures of Black Beauty and The Bill.