I've done quite a lot of improv work before, and I wanted to do this film ["The Invisible Woman"] because it felt like a different technique. We were very true to the lines, and there was something quite formal and almost theatrical about it.

I've done a lot of very low-budget indie films, so it was just really exciting and fun to be doing a film where there's a lot more time and these huge, vast sets. I was like a kid in a playground. It was amazing!

Acting has always existed alongside my normal life. It's been a case of learning on the job. I've worked in so many styles, with so many people, so I've picked bits up from everyone and everything.

Fashion choices are never arbitrary. Even if you say you don't care, that's a decision. There's something you're trying to say.

Now we live in a time where the public and the private are completely fused and there isn't such a great distinction. We know our private lives are constantly made public. With Facebook and Twitter there isn't such a desire, it feels, to keep things private.

I've never taken a role where I don't like a person on the page.

I made a film called "The Theory of Everything," which is based on Jane Hawing, who was married to Stephen Hawking - it's based on her book about their relationship.That's what the film will be about - they were both incredible, strong, willful individuals and I feel like that Stephen Hawking himself would say that he wouldn't have survived without the influence of Jane Hawking, and they were an incredible team together.