Colin Baker

As any actor will tell you, the hardest thing to do is small parts, because you focus all your attention and concentration on that small part. When you're playing the lead part, you don't have time to think about the whole of it, so you just have to steam on and get on with it.

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.

I'm not likely to be attracted to characters I've already done. I have to be almost frightened by the possibility of taking it on. Over the years, I realise I must enjoy walking that edge; I keep doing it.