There's something very intimate about taking someone's work, turning it over and unpicking it. In the same way people have unique handwriting people have a sewing style. You do start building a fantasy relationship with the person.

It's been four years. It's been the best four years. It's been wonderful, it's been a privilege to work under Steven Moffat. But I think when you gotta go, you gotta go It's sad, I'm going to miss it. I'm going to miss Comic-Con as well. It wasn't an easy decision, but I dunno, you can't play it forever. And, look, they'll get someone amazing and brilliant, and that's the great thing about the show. It continues, and it will get bigger and better. And you'll forget about me.

I am terribly clumsy, so there is a plethora of walking into lamp-posts, falling over, dropping things, and ruining sofas.

I am a terrible sleeper.

I would be sitting in my flat watching TV, and 'Doctor Who' would be on with my flatmate there. I would have loved to share the fact that I was the new Doctor, but I couldn't. I was going mad. My dad was rather flabbergasted. When I told him, he laughed. He was excited, elated and very proud.

I think there are definite parallels between sport and art. There's a real sense of sacrifice. There's a real sense of dedication that is needed in sport that I think you can attribute to art. I think so much of it is about bravery and courage, being an actor.

Time travel is such a magic concept.