Not everybody's a great singer, but people can get better at singing. There's great singing teachers out there. It's a muscle, you just have to train it.

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.

When you're working, you're flying on someone else's buck. When you're flying on your own, you sort of go, 'You know what, I'd rather keep the dosh in my pocket to spend when I get there.

I felt alive when I read a script and acted out a scene, or sang a song. It was my dream. I'm just very lucky that I'm still doing it and able to earn a living from it.

You can over complicate everything with techniques; when you're in the moment, you have to feel that you are that character, that you're feeling the pain or the happiness or whatever it is that they're feeling in that moment. Usually the authenticity will manifest itself.

On Broadway and in the United States it's very different - people crossover all the time into television. I think that we'll get there [in London] in the end, but it has to start with who comes to see you in the musical and whether they can see beyond the dancing and the singing.

If you look weird, you can blame the role, you know? So no one's going to tell me I'm having a mid-life crisis.