Christopher was born in Glasgow in 1967, and has been working as a playwright since the mid-1990s. He has worked with 7:84; Complete Productions; Borderline; and his own theatre company, MCT, with plays such as Free-Fall (shortlisted for Soho Theatre's Verity Bargate Award 2004), Boiling a Frog (adapted from the novel by Christopher Brookmyre), It Is Done, Cut to the Chase, Another Space, Molly's Collar & Tie and Smells + Bells. He was Playwriting Fellow at the Traverse Theatre during 2005. He has also written for radio, television, various pantomimes and cabaret revues. His work as a dramaturg, teacher and script/workshop facilitator is extensive, working with the Citizens' Theatre, National Theatre of Scotland, Glasgay!, The Traverse's Class Act project, Glasgow University, Coatbridge College, and many others. He is a former Chair of the Scottish Society of Playwrights.