DPJ often appears as an actor and voice-over artist in some of the theatre productions he scores for, especially in his work with the site-specific theatre company Grid Iron. Roles include The Lover and The Ghost in the multi-award-winning Those Eyes, That Mouth (2003); a parody of the French singer, Charles Trenet in The Devil’s Larder (2005/2015); the barman Silent Dave in the Charles Bukowski-based Barflies (2009/2012); and his one-man, sell-out Edinburgh Fringe performance as Gilbert K Prendergast in What Remains (2011), portraying a obsessive concert pianist and serial killer. He played Pip’s inscrutable Butler in Dundee Rep’s production of Jo Clifford’s adaptation of Great Expectations (2015), and in A Game Of Death and Chance (2019) he played Deith — a soothsaying Prophet Of Doom — and a macabre seventeenth century Plague Doctor.

In Last Night I Dreamt That Somebody Loved Me (2024), he shared the stage with writer / director Ben Harrison, recounting poignant and often hilarious narratives of their respective lives as 1980s teenagers.