Roger Ashton-Griffiths is a British actor, screenwriter, and director. He was born in the west of England, in Hertfordshire. He studied music at Lancaster University (1975-1978) and fine arts at the University of East London. He began his career as a singer with the English National Opera on the stage of the London Coliseum. He holds dual citizenship - Canadian and British. He lives in London and Suffolk. He is married to BBC studio manager Sharmini Thillaimuthu. The couple has two children.

Ashton-Griffiths has appeared in many well-known films. Among them: "The Brothers Grimm" (2005), "Young Sherlock Holmes" (1985), "The Cook, the Thief, His Wife & Her Lover" (1989), "You Will Meet a Tall Dark Stranger" and others. He has also worked extensively in television, appearing in such cult fantasy television series as "Doctor Who" and "Game of Thrones" (the role of Mace Tyrell in seasons 4-6). He served as director and screenwriter of "Deflation," a 2001 short film.