Jack's theatre credits include The Flying Bath, The Everywhere Bear (Little Angel Theatre), Treasure Island (Bristol Old Vic), Billy Budd (Wilton’s Music Hall), A Matter of Life and Death (New Vic Theatre), Pinocchio, A Midsummer Night’s Dream, The Tale of Mr Tod (Red Rose Chain Theatre), Waiting for Anya (The Barn Theatre), and A Christmas Carol (Middle Temple Hall, London).