David Bradley (born 17 April 1942) is an English actor. He is best known for his recurring role as Argus Filch in the Harry Potter movies. He started acting on stage in 1971, and won a Laurence Olivier Award in 1991 for a supporting role in King Lear. His more recent credits include The Sarah Jane Adventures, Doctor Who, Ashes to Ashes, The Tudors and The Colour of Magic, as well as the film Hot Fuzz.
In Game of Thrones he is playing the role of Lord Walder Frey, and was announced in the role on 24 November 2010.