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.

I feel arrogant trying to give people advice.

Every time I get a role I think, 'I've actually fooled them again, I can't believe they keep falling for this!

When I was growing up, there was a man who gave me lessons and things. I'm very dyslexic so he used to give me extra reading and writing. And he always knew that I was interested in stuff but he never told me that he was in the Second World War himself. One day he gave me his helmet that he had worn through the North Africa Campaign. It was just before he died. So I've got his helmet. That was pretty special to me.

My bedroom's like an armoury.

I think in this world and this industry, if you let it, it does. And I feel that the people who don't have good friends and family around them are the ones who get a little funny. But I'm very lucky. I have good friends and good family and if I ever stepped out of line, my mom would take me down!

I think camping is one of those things where if you're forced into it as a child, you'll probably hate it as an adult.