The doctors say it dates back to a film where I had these huge prosthetic breasts because my character was breast-feeding. The weight of them, and of the baby, did my back in.

Well it's hard to bracket it like that because everyone always thinks you either go to America and you come back, fail or succeed, but it doesn't work like that.

And the most important thing - apart from telling a good, believable story, and being a true character - is to be someone the audience will care about, even if you're playing a murderer or rapist.

I play a character every day of my life, and I don't want to play a character as myself. They can judge me as an actress, not as a person. I'm not a spokeswoman for Anna.

The doctors say from one to two weeks, not taking into account the president's irrepressible character.

I've always chosen incredibly different roles and things that are quite offbeat. That way you're not limited.