I don't want to be like the actor who rehearses everything in the bathroom, then comes to the set and carries on completely uninterrupted while the other actors tiptoe away.

But filming is good for you, because the crew isn't allowed to laugh. You can't get addicted to getting the laugh.

I don't want to be like the actor who rehearses everything in the bathroom, then comes to the set and carries on completely uninterrupted while the other actors tiptoe away. I'm so dependent on reacting to the other actors on the set, and to the director. I'm very responsive. I react. And I treasure the energy that reaction gives. I feed off that and work off that. I don't like to be too prepared, no. However we define too prepared, if I feel it's getting that way, then I'll back off. My line-learning is very special. I like to learn the dialogue of the whole film before I arrive.

If I were to play somebody who ran a fish and chip shop, I would not work in a fish and chip shop for three months. Staring at chips is not going to help me in my performance.

Millions of children are disempowered and we need to empower them.

Fifteen years before I became a screen actor, I was in the theatre. A lot of my work was comedy, which I loved doing. It's harder.

I have never felt bereft of anything.