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.

I've mellowed quite quickly.

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 do remember reading the script of 'The Nightmare Fair' and looking forward to doing it.

The waves of time wash us all clean.

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

It's not so much a thankless task, it's more a job with no thanks