I'm so thrilled to have been asked to guest in the Doctor Who Christmas Special, I'm such a fan of the show. The read-through was very difficult for me; I wanted to keep stuffing my fingers into my ears and scream 'No spoilers!' Every day on set I’ve had to silence my internal fan-boy squeals!

I love Twitter; I'm on Twitter quite a lot.

I'm not going to say I'm not a fan, but I'm a fan of house music, essentially, and kind of indie, and I was always into the kind of sub-pop Seattle Mud Honey and Pearl Jam kind of sound. But my kind of big love was house music ever since I was 15/16, going to raves when I was 15 or 16 years old and not going to school, like a naughty boy.

People say, 'Oh, you're famous now, so you must go to L.A.' - I don't live in L.A. now - but it's like, why wouldn't you? The weather is amazing, the film industry's there, it's a great quality of life.

I'd be happy doing anything on a film set.

Someone once pulled me aside and said it was all right to succeed, and I realised that I knew what failure felt like, but I didn't know what success felt like. I've carried that with me ever since.

I don't see the point of being an actor and doing the same thing, all the time. Where's the challenge there?