I'm not one for doing the children's party version: "Hi, I'm a character in a movie and now I'm in reality!" I was doing the last shot of the film before reshoots outside their shop. I was starting my run into the frame and I thought, "You are literally ending where this began. The loop of serendipity's too much to not go in and acknowledge it." I just wanted to see the look on their faces.

I never really got obsessed about one thing for long. I was a bit of a butterfly and a magpie.

Any privacy in public is a hard thing to negotiate.

Lines are very difficult to learn.

The number of people my age, younger now, a whole generation younger, who are fiercely bright, over-educated, under-employed and who are politicised and purposeless really upsets me. It's soul-destroying.

I haven't done period dramas back-to-back, or really anything back-to-back. You get asked to do what you're most recently famed for, so I'm careful of not repeating myself.

It'd be really nice to wake up looking like, I don't know, Jake Gyllenhaal and think "Let's try this on for a day and see how it feels.