For me, one of the biggest thrills is going to a theater and going, "Oh, I got a laugh!" Because you never quite get to hear it [otherwise].

The Railway Man was a particularly intense and immersive experience. I definitely got carried away. I lost about 35 pounds. I really was incredibly skinny and also quite unwell while we were filming. It wasn't very healthy. I don't recommend it. But then also doing the torture scenes, the water boarding stuff, there wasn't really any other way just to do it really.

Nearly every taping or audition has to be in an American accent, so you don't have a choice; you just have to get good at it. I'm sure you can appreciate accents - it's like learning any skill, you have to work at it and work at it and it takes an awful lot of time, until it's muscle memory and you don't have to think about it anymore.

I feel arrogant trying to give people advice.

I think most actors will tell you the same thing; when you're not working you put 100 percent into every audition.

I actually collect old First and Second World War memorabilia.

My first time acting for camera really was for Steven Spielberg in War Horse. I was trained in theater and I was actually working in theater at the time. I had a small role with the Royal Shakespeare Company, which is a huge prestigious theater company back in England. I honestly thought that was as good as it got.