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.

For one movie, I'm learning to play a violin, and I had never picked up a violin in my life. That's a big challenge. That's what I see as one of the advantages of this business. You get to do things you'd never do, in a normal lifestyle.

Each form of the acting is different. I think it keeps your mind active. TV, film and theater are different disciplines, as are independent films, opposed to studio films. There are differences in the size and the genre, or a period drama as opposed to a contemporary drama, or the types of characters.

Every film, every fight choreographer, wants to have a different flair, have a different fight technique. So any film I've done that involved weapons has always been fascinating because everyone is different.

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 do not comment on my client's personal lives in the media. As for Luke, he did so once, a long time ago when he was an inexperienced, young actor and now with maturity and hindsight, he has learned not to engage the press in his personal life again.

Well usually if I'm having a sh***y day, I don't post anything. I don't go out just to tell everyone I'm having a great day, even if I'm not.