Callum was a founding member of the performance collective Shunt, and has been a theatre-maker and actor for over 15 years. In 2009 his first short play, ANYBODY THERE was performed at the ICA as part of the Shunt curation. His first full-length theatre script, RAIN, had a rehearsed reading at the People Show Studios in 2012. In 2013 his radio play CLOSURE was short listed for the Actors Guild Radio Play award. In 2015 he wrote CORETTA, ALICE & JACKIE, presented as a work in progress at NT Shed as part of Sphinx Theatre’s Heroines festival, and co-produced with director Russell Lucas an industry showcase of ATROPHY, his play about hunger strikes and the importance of the right to protest. In 2016 RAIN was produced by Matchstick Theatre, and Callum wrote THE THIRD, a departure from Richard III. He was also commissioned by Pint Sized Theatre and mentored by Timberlake Wertenbaker to write PASSING, a short play looking at gender identity. In 2017 Matchstick Theatre produced FLUSH, which looked at LGBT bigotry & racism. Callum is now working on WHO IS THIS PLEASE?, a commission from the LGBTQ Arts Review for CPT. He is also currently working on his first screenplay, DIALYSIS.