Caves ended up being offered places at both LAMDA and Bristol Old Vic, opting for the former because of the lure of London. His training focused on theatre and, prior to his addition to the Silent Witness cast, was known as a stage actor, having impressed as Petruchio in the Royal Shakespeare Company's 2012 touring production of The Taming of the Shrew. He has also starred in Ironclad: Battle for Blood.