It's a tricky one when you're playing somebody who is mad. There's often the big actor's question, if you're playing a part like that: do you take it to be an internalized thing, pull the audience in, or do you go full-out, and kind of present it as quite a shocking thing?

I have no idea whether I am completely sane. I don't think anybody is. I see the world through my eyes. It's sometimes a strange world. I hope I don't hurt people. You hope not to hurt yourself too much, either. Maybe that's the definition of keeping yourself in check?

I've got a lot of experience with anorexia - my grandmother and great-grandmother suffered from it, and I had a lot of friends at school who suffered from it. I know it's not something to be taken lightly and I don't.

I am a slow reader. I always loved words, which is a strange thing given that I couldn't actually read them

The thing I love about acting is getting to change and look at different people in different lives and do different projects.

I love costume dramas, I love performing in them, because in a funny kind of way, you feel more free. You know about the period, you can read the books, you can see the paintings, but you've never actually going to know what it was like. You can kind of stretch those boundaries a bit.

Be happy in your body. It's the only one you've got, so you might as well like it.