I'm in a fortunate position that sometimes you just get offered roles - they're not necessarily the roles you take, but to get offered a film is amazing. I think the work you've done before that is why you get it.

I always wanted to sing, as a child.

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.

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.

It must be weird having one child.

There's always a connection to be made whether you're playing a psychopath or whatever. It doesn't really matter; you've got to find this thing that you relate to with each character otherwise you're missing something.

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.