He has also directed Joe Orton's The Ruffian on the Stair at The Hope Theatre in January 2019 featuring Lucy Benjamin, Gary Webster and Adam Buchanan.

Clayton made his first stage appearance for ten years in Brimstone and Treacle at the Hope Theatre in 2017 for which he was nominated for an Off West End award for Best Actor.

[4] On stage, Clayton was a member of the Royal Shakespeare Company where he appeared alongside actors including Judi Dench and Zoe Wanamaker.

Clayton was Chairman of the Actors' Centre in Covent Garden for ten years, stepping down in January 2018 and a former member and associate artist of the National Youth Theatre.

[11] Clayton's most recent appearances inlucde Drew Peacock in BBC One's Eastenders,[12] Sir William Kingsley in Wolf Hall The Mirror and the Light,[13] and more Torchwood adventures for Big Finish.