I was the kid who never won the races. I never jumped the highest. I wasn't on the list of the high-achieving.

I knew it was going to be important that if I had an audience understand who she was, then all those things had to come from a place that was grounded, as opposed to being tics and manners and twitches. I didn't think it was going to be as rich, perhaps, as if I was going to make it more emotional.

If you're not still learning and growing as an actor, then you have no backbone and no career

I've never worked with prosthetics before in that sort of capacity. I did a bit of prosthetic work when I had to give birth in Jude, which is quite a different set of prosthetics. But I had so much admiration for the hair and make-up department and the prosthetics team, who are actually based at Shepperton, and who put together that look for Hanna. I

For my own children, I do want for them to look back and remember that it was me in the kitchen, that I was doing the packed lunches, that we were there on the school run, that we did take a bus. I want them to remember those things, because those are the things that I remember from my own childhood and that have been incredibly important to me.

I feel very strongly that curves are natural, womanly and real. I shall continue to hope that women are able to believe in themselves for who they are inside, and not feel under such incredible pressure to be unnaturally thin.

For me, they definitely made it more challenging. The comfort zone factor really kicked in between Leo and I, and I just think that's because we know each other so well. We've known each other since we were 20-years-old.