I did mega-training with ex-military men. I'd be in the gym for two hours after a 12-hour day on Spooks, and it was so hardcore I'd throw up. I stuffed myself with food and drank protein shakes to bulk up. I used to be a dancer, but I had to strap my weak ankles every day and strengthen my wrists so I could hold a machine gun. My body just wasn't up to it.

I'm probably more of a new man. I'm not particularly alpha. 'Nourish and nurture' are my watchwords as opposed to 'search and destroy'.

I never like to go out of character when filming starts. I fear that if I do, I might not be able to pick it up again.

Sometimes I hate the job that I do as an actor. I feel like I'm just of no importance in the world, but sometimes you get a real thrill out of the diversity of the work.

I'm not a massive fan of 3D. I've seen some good 3D, and I've seen quite a lot of bad 3D. I think if a film is created for the shock effect of 3D, then it's a certain type of film that I'm not massively bothered about.

You have to remove your human sentiment when it comes to greed and the accumulation of wealth.

I feel like my imagination was crafted by Tolkien. He seemed to tap into that childhood intrigue of secret doors and hidden worlds.