Notable for his role as Jonathan Vance in The WB drama Three and for his portrayal of Lieutenant Andre in the 1998 film The Man in the Iron Mask, Atterton is also known for his guest star roles in episodes of Firefly and Charmed.
He made his television debut in a 1993 episode of the ITV series Agatha Christie's Poirot.
He played a recurring role on the British series Medics.
He was born and raised in Birmingham, England, and he later attended Trinity College, Cambridge. He married Kelly Atterton.
He and Alec Newman were both in the cast of the 2003 science fiction miniseries Frank Herbert's Children of Dune.