I'm an actor. If you had said to me before I started acting that I'd get two bites of the cherry - you would do things that people will remember forever like 'The Brothers' which I did in the '70s and now 'Doctor Who' - I'd have been overjoyed and I still am.

I never have reservations about doing anything as long as I'm being paid.

It was lovely to do The Knock because I haven't done anything really significant since Doctor Who.

I like challenges that test your ingenuity.

If you turn down work because you are frightened of getting typecast, you'll never do anything good.

The standard of writing that I'm getting now from 'Big Finish' compares very favourably with some of the stuff I was doing on screen in the '80s.

One way of watering down the effects of violence is to approach it in a more lighthearted way. I don't mean to say that you laugh when somebody has their arm sawn off, but you can diffuse fear with humour.