I don't really think about roles - "dream roles." It's always about who's gonna be the person on the screen or who's gonna be the person on the stage and who's gonna direct it and put it all together.

I wanted to be in a Baz Luhrmann film. It's just extraordinary. He's so amazing at what he does. He makes the most incredible films.

I never get recognised here in London, which I like. Once a year, someone comes up to me and asks if I am 'so-and-so's niece' because they think they recognise me from somewhere. I like that.

I probably dreamt about running off to America or something when I was 16 because it just seemed like I was studying algebra and going, 'What am I going to use this for?

It makes it easier, if you can't do an American accent. I don't know. It's different. I played a character in Never Let Me Go where the script for my character was very sparse, and I enjoyed it. With Never Let Me Go, I had a whole book written from my character's point of view, so I always knew where I was. But, with Ryan [Gosling], it was just easy. He's such a brilliant actor and he is so prepared. He doesn't have to warm himself up to be in a scene. He's just in it. It draws you in, in a way.

I've never been obsessed with celebrity or star-struck or anything. I met Penelope Cruz when we were in Toronto, who I think is a goddess and an unbelievable actress, and she introduced herself. As she walked away from the table I had to take a deep breath, which was strange because I've never had that with anyone.

In London, people can be so... well, it's not even a case of people being unkind or unfriendly. You just don't make any contact in London. You go from A to B with your eyes on the pavement.