I think I sort of realized it was an international thing when we went to South Korea for The Fast [and the Furious] 6 premiere. We knew nothing about South Korea, and we came through the sliding doors [at the airport] with my luggage and there were like 60 fans with Luketeer banners: "We're your Korea Luketeers." It was like, wow, this is amazing.

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 don't think a lot of people know that I can sing. It's not common knowledge.

And I knew that, being an actor, you have to take the rough with the smooth and the highs with the lows. That's how it is.

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.

When I left school, I got a job in a shoe shop and I used to save 15 quid a week and pay for my own singing and acting lessons.

I think it's a slippery slope to fabricate a different life.