My family has to be very patient living with me, if you're playing a part that's not you. You have to get it right.

We had our British background of traditional theatre behind us.

I love people where, at the end of the day, they'll pick up a paintbrush and paint clouds. They can physically make things.

I found American actors quite scary because they're brilliant actors and brilliantly funny, and they never stopped once you wound them up... off they went and they just deliver fantastic stuff.

It'll be sad not to be Doctor Who anymore because that's an incredible thing to wake up in the morning and go, 'Oh, I'm still Doctor Who!' And you can go and blow up some monsters, and that's how you spend your day. And also when you walk around people don't see Peter anymore, he's not here, it's Doctor Who they see and he gets many more smiles than I do. It'll be sad to say goodbye.

I can't imagine I'll be the new George Clooney. That's not really in the cards.

I'd say, don't listen to what anyone says: you're good. Go put your anorak on. Get your thick bottle-top specs. Draw your little cartoons and your comics and keep writing to the BBC.