So many actors get caught up in their technique, and to be honest, I see it really getting in the way. I see them forcing things. I definitely do my best work when I'm free of that. But I think as an actor, I work really hard in preparing the roles. I spend like 90 percent of my waking moments walking around thinking: "What does this character do? What is his relationship with so-and-so?" Always, really. Too much!

If you just tell the story of what the storys about, then it sparks curiosity, but I think it also arouses suspicion, as you say, that it could be overly sentimental. But it so isnt. And I think it was all about doing the inner work and then underplaying everything.

I had to go and sing with the musical director of the film, Simon Lee, who is just incredible, and it went great. I sang with him about five things, things we'd worked on. And then I went to sing for Andrew Lloyd Weber.

I don't know whether it's spiritual development or trying to learn the psychologically with being an actor, but I realise the more I get into it that this was something I was always supposed to do. That allowed me to sit easiser in the life I was living. But that doesn't mean to say you just stroll through it. It takes work and the work is not always about acting. It's sometimes about how you deal with the ups and downs of hope, of expectation.

The fact that you touched somebody's soul or made them laugh-that's a wonderful thing.

I sang in a rock band when I was training as a lawyer. You know, not professional, we just did it for fun. We just did gigs all over Edinburgh and some in Glasgow and some at festivals.

I was born in Glasgow. But my family is pretty much from a little town called Paisley, famous for its cotton mills and paisley pattern.