Blue is best known for his role as Mason, a grim reaper on Showtime's hit series about the undead, Dead Like Me. His other television credits include UK's Channel 4 hit series As If, Love and War in the Appenines, Shades, The Bill, The Practice and Casualty.

On the big screen, Blue played Charlie in John Cosgrove's independent film Caffeine. The film stars Andrew Lee Potts and Mike Vogel and will be produced by John Cosgrove and Jo Levi of Steaming Hot Coffee, LLC. The film centers on an ensemble cast of twelve characters in a coffee shop and focuses on their romantic relations. Blue plays the cook at the coffee shop. He can also be seen in Knights of Impossingworth Park, opposite Ron Perlman and Angus MacFadyen.

Blue's other film credits include The Princess Diaries 2: Royal Engagement, starring opposite Julie Andrews, Anne Hathaway and Hector Elizondo, playing the role of Duke Andrew, and the Mario Andreacchio feature film Young Blades, in which he played Aramis.

A native of London, England, Blue received his theatrical training at Mountview in London