George Costigan was born in 1947 in Portsmouth, Hampshire, England. He is an actor and writer, known for Garage (2007), Calendar Girls (2003) and Hereafter (2010).
Costigan has been on television since 1978. He starred in the 1982 series of The Barchester Chronicles, an adaption of the novels by Anthony Trollope, in which he played the part of Tom Towers. In 1984 he appeared as Philip the Bastard in the BBC Television Shakespeare production of The Life and Death of King John (alongside Leonard Rossiter in the title role).