Matthew's other stage roles include Neil Simon's Brighton Beach Memoirs, Fleance in Macbeth and the title role in Hamlet.
Matthew attended the Regenerations 2005 convention held at the Swansea Marriott Hotel on 24-25 September 2005.
Matthew likes to collect rare books by obscure mid-century poets.
In 2006, Matthew self-published his first novel entitled Fates, Flowers: A Comedy Of New York.
Matthew is left-handed.
Matthew's first Doctor Who story was entitled Full Circle (which was the first part of what is known as 'the E-Space Trilogy') with Tom Baker as the Doctor. His final full Doctor Who story was entitled Earthshock, with Peter Davison as the Doctor.
Matthew was the youngest male actor to play a Doctor Who companion in the original series- he was 19 when he was cast.
Matthew has recorded commentaries for several Doctor Who DVD releases, including The Keeper Of Traken, The Visitation, Earthshock, Black Orchid, Full Circle, State Of Decay and Four To Doomsday.
Matthew has a character named after himself in the British comedy series Little Britain: an eccentric would-be inventor of things like breakfast cereals and boardgames.
He is openly gay and is believed to be the first actor on Doctor Who to have been open about his sexuality while on the series.
Matthew Waterhouse: (on Adric's death) It was a very strange feeling finding out that I was going to be killed off. I didn't protest at all, though. I didn't think they would listen anyway... Also, I think that's the right departure for him. Can you see him leaving for love or sexual reasons? I don't think so. For the children of the time, it's one of the moments of television that will remain with them forever.
Matthew Waterhouse: In my view, there are no good actors under about forty, because actors become good through experience- both of acting and of life.
Matthew Waterhouse: The job of an actor is to burrow as deeply as possible into the character being played, but in a series like Doctor Who, it has to be said, this is probably a waste of effort. There simply isn't enough there to find. I was getting immersed in all these questions, which are the very stuff of fine acting, and of course it's wholly irrelevant. Perhaps it would have been better if I'd forgotten it, and smiled a lot. But that's not the way I work. I am many things, but I'm not a hack.
Matthew Waterhouse: I can hardly object if my acting isn't liked, because that's a matter of opinion.
Matthew Waterhouse: One of the problems of TV rehearsals is that directors become so preoccupied with technical considerations that people rarely discuss character. I suppose the assumption is that actors do all that work themselves, but it's rubbish: rehearsal time is about that above everything. If you simply cast types and leave them to churn out performances, you get the sort of boring work that you see all the time on popular TV- work with no depth at all.
Matthew Waterhouse: What I always wanted was for Doctor Who to be more outrageous. John Nathan-Turner's greatest contribution to the series is that it's consistently fascinating in one way or another. It's not all good- it can't be- but it's not bland. Most television is so bland- a sort of brainless mass of jelly that doesn't even have the courtesy to be really bad.