Kieran is an award-winning writer based in Glasgow, Scotland. His plays include Adults (Traverse), The Enemy (National Theatre of Scotland), Mouthpiece (Traverse), and Heads Up (Summerhall). He was nominated for a BIFA and WGGB Award for his debut screenplay for the film Beats, which was executive produced by Steven Soderbergh and based on his breakout play of the same name. His plays have repeatedly been produced in English and in translation across the globe, including in London, New York, São Paulo, Istanbul, Lisbon, Brisbane, and, most frequently, Seoul. He is co-Artistic Director of independent theatre company Disaster Plan.