Snow Cake is a lovely film. Really proud of that. We shot it in 21 days. I thought Sigourney was amazing in it. And very, very accurate. I think there was some element that thought she had pushed it too far. But not at all when you do the amount of homework she had done and spent the amount of time she did with adult autistics. She was right on the money. And I think Marc Evans is a terrific director. He's a sweet, open, honest man and a really good director of actors.

What is it about actors? God knows I get bored with actors talking about themselves.

I always feel that when I come to Edinburgh, in many ways I am coming home.

I mean, language fascinates me anyway, and different words have different energies and you can change the whole drive of a sentence.

I've learned, having been on a lot of sets, the good news is that by definition you are surrounded by experts. They get fired if they're not - unlike in the theatre!

Each character I play has different dimensions. I'm not interested in words that pull them together.

I am hellbent on defying your expectations, at every turn, and even if you don't like what's being done, I dare you to find it uninteresting.