I spend plenty of time in London and it doesn't scare me, but it's a lonely place, even if you've got friends there. My job takes me all around the world, meeting lots of interesting people. But I think if I couldn't get home, if I couldn't get back to what I consider my real life I'd be frightened.

Filming is long - you get very tired, and your skin breaks out and you get lumps and bumps. It's easier if you're allowed to have bags under your eyes.

When I'm doing theatre, I feel like my life's on hold. Even though you might go out for a coffee, or go and see a film, your brain is still there, pulling you back to it.

I like doom and gloom with a sense of humour. Maybe it's a Scottish thing, we like to undercut indulgence with a laugh.

American scripts are usually non-stop conversation. People talking over each other. I like that.

I'm not going to get an Oscar at 30 - that's done. So I'll think of something else.

I'm always nervous taking on a period role because it's difficult to research - you can't observe it, go out and see it. But it's satisfying because eventually you think, 'I got there.