As well as appearing in all the above listed projects Mark also has a successful theatre career, appearing in acclaimed play The Long, the Short and the Tall. He also played the title role in An Inspector Calls at the Garrick Theatre, Pop in the musical We Will Rock You at London's Dominion Theatre, and in Fings Ain't Wot They Used T'Be at the Theatre Royal Stratford East. He played Bryan on the ITV sitcom Teenage Kicks, which was shown on Friday nights at 9.30pm on ITV1 from 28 March to 16 May 2008.