Within the process of filming, unexpected situations occur.

Actors use who they are to be someone else, but I would hate to ever think I'm playing myself. It's imagining being someone else that is the key motivating thing for me. So when people want to know about me, it makes me a bit unnerved.

Like anything to do with trust, in any relationship it emerges and just the chemistry, vibe between two people an actor and a director. You just know whether this is someone I like to be with whose interaction with me I believe in.

I loved doing Harry Potter. I had a great time on that. And I think it's good to have a mix. I think you're learning all the time.

Performance is made in the editing room, and I've come to see the truth in that - the idea that they say performances are usually made in the editing room because what you film is the raw material. I think just going through the process of saying, "Which take do we use? Why is that the take we want? I want that take can you edit again, I'm not sure that's the one, I think it's this one." And just because you go through that process, I think somehow it's made me sort of more open about the [actor's] possibilities.

It's great to be on a set where there's time and there's focus and there's also a kind of adrenaline thrill on a set where people are saying: "We have to get this shot, we've have to go, we've got to move on!"

I've never felt fallow in the sense that there's been no work.