Every so often you get to play wonderful characters maybe at the wrong time in your life. Sometimes, you get to play terrible characters at a really great time in your life. Sometimes, the right character comes along at the right time.

There's no regret. You can't regret. I mean, I've felt regret but I've also refused to allow regret to sow a seed and live in me because I don't believe it. You feel it, it's like guilt, it's like jealousy, it's like all those horrible things. You've just got to snip them and get them out, because they're no good.

When you suddenly appear on the scene and you are the new face, everything centers on you. I experienced this in my mid-20s and I found it rather hard.

I'm keen to do as little or as much reading and watching as the director may advise, and often off that you kind of stem into other things that you find of influence, perhaps the things that you're watching. It's a good excuse to get to know a new profession, or a new approach, or a new era. It's about authenticity. It's about having the confidence to really feel that you're saturated and know the world you're about to step into and understand the person you're about to be.

I'm not called Jude Law, I have three names; I'm called 'Hunk Jude Law' or 'Heartthrob Jude Law'. In England anyway, that's my full name. That's the cheap language that's thrown around, that sums you up in one little bracket. It doesn't look at your life. But if one looks beyond, there is actually a little bit more.

When you got source material, whether it's a play or a book - a great writer often appreciates being adapted and developed. It's like when you go see a production of a great play and they are always different. There is always room for interpretation.

My only obligation is to keep myself and other people guessing.