It's really important to take time for yourself because if you don't know what it is like to be a real person and spend time with a sense of normality, how can you play normal people in films?

More often than not, if you've got a good director and a good script you can't really go wrong.

Nothing's been changed overnight. It's like watching your cat grow: you see it every day, so you don't really see it change, you wake up one day and it's a bloody great thing. Your friends come round who you haven't seen for a couple months and they're like, "Oh my god, your cat's grown so much again." And I'm like, "Has it?" But when you're living it... I just find that my life has subtly changed bit by bit, so I don't ever really notice it too much.

The movie is so fun. I've done period pieces before but nothing with this twist. And the movie is just full of such wonderful people, such young actors - people like Matt Smith that I've been friends with for a while.

When I meet girls, I pray that they don't know who I am. But I know that's limiting myself quite a lot.

Every year I look at the 'GQ' Best-Dressed List and have thought what an honour it must be to be included. I couldn't believe my eyes when I saw my own face in there.

As a kid, I used to run around our garden waving a stick and pretending to be a million different people. That's why I became an actor, really.