It's my chance to challenge myself to the fullest, which is one of the great joys about my job... I love it when a character requires me to look less than my red-carpet best. It's more fun playing a character that requires you to look like dog s - t.

There's not an awful lot that embarrasses me. I'm the kind of actress that absolutely believes in exposing myself.

I look very different from how people expect me to be... Clearly they think I'm a great big fat viking.

My skin still crawls if you call me a movie star. I get embarrassed. I think, don't be ridiculous. Maybe it's because I'm British. To me, Julia Roberts, that's a movie star. But when people do call me one, that, I think, is an enormous compliment but, my God, is that a responsibility!

I kept on going and I overcame my fears and got over my insecurities.

I'm no stranger to the occasional dodgy juice, but it doesn't taste very nice and it is bloody boring. It's not a way to live.

Just coming to terms with the fact that I got to play April Wheeler [Revolutionary Road] and Hanna Schmitz [The Reader] in one year, let alone in my lifetime. I'm very, very aware of how rare that is as an opportunity for any one person. I can't tell you how much I've been able to take away from these experiences creatively. I really, really learned so much about acting, about myself... all of those things. It's difficult to talk about the actor's process without sounding like an arrogant asshole but they really were very challenging.