As an actor, you try and be cool, but one of the reasons you become an actor is because you're a film fan. And then you're like, 'Oh my God, Ridley Scott just spoke to me!'

Doing 'Prometheus' was what you imagine being an actor is like when you're five. In a spacesuit, on another planet, getting killed by an alien. It was a real treat; it felt like being a part of movie history.

When you do a film, you get picked up in a car, lunch is free. Theatre is really hard, and you get absolutely no money.

It's properly scary playing a leading man. Growing up, I always wanted to be a character actor.

If you're a casting director, you're going to be curious to see what Timothy Spall's son is like. But when you get in the door, you have to have something to offer.

I've done loads of things people have never seen - dramas on BBC4 and plays upstairs at the Royal Court and the Bush - and because I didn't go to drama school, they gave me an education.