Sometimes people get really sniffy about the films you choose if you've done more dramatic projects or you're classically trained.

Macbeth was the first play I ever read.

Nowadays people don't know how to handle it if all the ends aren't tied up and they're not told what to think in films. And if they're challenged, they think it's something wrong with the film.

I come more to Scotland than I ever used to, so I feel more connected to it, more part of the zeitgeist. You know when you realize you have a choice and I'm choosing my homeland. It's funny: when you get older these things creep up to you.

I actually find in America, there's a slight snobbery about actors who go back and forth between big heavy dramas and popcorn fare. That always intrigues me, because that doesn't exist in the same way in Britain. And I imagine it would be worse. In terms of the sort of class, and the sort of snobby, slightly on the back-foot thing Britain has. But it's much more prevalent in America. I'm really intrigued by it. I don't know why that is. But I'm aiming to break down those barriers by being in a Shakespeare film and a Smurfs film within six months of each other.

Be who you like as long as you mean it.

Performing a one-man Macbeth feels like the greatest challenge.