David Crellin (born 1961) is an English actor. Crellin, who was born in Sheffield, South Yorkshire, is known for roles in Emmerdale as Billy Hopwood, BBC 2's BAFTA award-winning series The Cops as Alan Wakefield, and Coronation Street as gangster Jimmy Clayton, chargenurse Thornton who looked after Don Brennan after his car crash, and receiver Graham Baxter who wound up MVB Motors. He also starred as Jimmy Grainger in the first series of Waterloo Road on BBC One. Crellin lives with his wife and children in Horwich, near Bolton.