(Answering a question asking if he would like to take over as producer of "Doctor Who" at some point)
Mark: I don't think so. I worship the programme - I've given most of my life to it and several pints of my blood! It's really a very good thing to be slightly more detached and just to contribute as I am with a script and appearing in it like that. I couldn't be happier. It's such an extraordinary response and for Russell to have pulled it off so brilliantly...who would have thought a couple of years ago? And it's more popular than it's ever been, that's the most amazing thing.