Sometimes I comment, but you have to be careful because if you do it for one, everybody wants you to say something.

I'll tell you a little fun fact about the film, though. Me, the little boy playing Chip, Emma Thompson, and Emma Watson, all have the same birthday. We were all in on the same day and they all sang us "Happy Birthday." That will never happen in my life again: Four of us having the same birthday on the same film, and we're all in on the same day. It was an extraordinary thing.

It must be weird having one child.

I think the best directors rarely loose their temper. I think the best directors provide you with a safe environment where they can instill you with confidence and allow you to try things out and not feel like your failing or that you're doing it wrong.

I started doing [acting] for a living, no one really warned me about the amount of traveling I would do. I always thought everything was shot in Los Angeles.

I've traveled everywhere, and it's been amazing. I used to think taking a flight was kind of a big deal, you know? I'm from the valleys of South Wales and when my family used to go on holiday, it was a big thing. Packing the bags, checking in, not losing your passport, going through customs, the X-ray machine, all that stuff used to be quite an intense thing. Now it's like catching a bus, I don't even think about it.

It's never the practice to shoot the scenes in the proper order. Sometimes you shoot the final scenes of a film before you've even started the beginning. So you get good at it because you have to sort of just eliminate the memories of something you've done as an actor, which you haven't done as the character yet. But it sometimes is a bit of a mind-f**k.