Balfour began his career in the ITV police drama The Bill, appearing as Asher Campbell between 2005 and 2006.[1] In 2007, he began portraying a different character in a regular role, as PC Benjamin Gayle until the show's cancellation in 2010. Balfour's theatre credits in include The Royal Hunt of the Sun and Market Boy at the Royal National Theatre (2006), and Absolute Beginners at The Lyric Hammersmith (2007). [2]