The Citizens Theatre Glasgow gave Mark his first professional acting job in 1980. Since then he has acted in a great variety of Theatre spaces including The Rollright Stone Circle, The Royal Opera House, Broadmoor Special Hospital, Manchester’s Palace Theatre, Glasgow’s Kings Theatre, The Liverpool Playhouse, both Chichester Theatres, The Lyttleton and Olivier at The NT, The old Memorial and Other Place and Swan at The RSC, The Apollo, The Pinter, The Duchess, The Duke of Yorks, The Arts, and The Queens Theatre in the West End, as well as The Bush, The Lyric Studio Hammersmith, The Royal Court, The Old Vic and The Middle Temple Hall.
He has toured to many theatres regionally including The Contact Manchester, The Olympia in Dublin, The Theatre by the Lake Keswick, The Queens Hall Arts Centre, Hexham, The Marlowe Theatre, Canterbury, as well as many adapted sports centres and other halls.
In America he has played in New York at The Belasco, The Music Box, The Long Acre and St. Anne’s Warehouse, Brooklyn. In the American regions, The A.R.T. Cambridge, The Public, Pittsburgh, The Shakespeare Theatre Chicago, The Guthrie (both spaces) old and new, Minneapolis.
Mark was the first Artistic Director of Shakespeare’s Globe Theatre (1996-2006), which included the construction of The Globe Theatre and International Shakespeare Globe Centre. He founded the organisation's Architectural Review Group, which is at present reviewing the architectural decisions of 1996-97 in the light of twenty years' experience of playing at the Globe.