You never know what's right, what you feel inside versus what is portrayed.

Most actors hate watching their own films because all you can see is the glaring mistakes, your own tricks and ticks.

They're such hierarchical things, film sets, they're sort of mini societies. Often they're incredibly political places.

If you're an English actor and turn up in America, they don't have an opinion about where you sit. They have no idea what auditions to send you to, so they send you to everything.

I love the Potter films. I found them the most wonderful sort of escapism every year or two.

As an actor there's a lot of scrutiny and, even when you've had success, it becomes about sustaining that success. A friend of mine described it as a peakless mountain. Even for Robert De Niro there's Al Pacino and for Pacino there's De Niro.

If you've loved something and then in some ways you become a part of it, you just don't want to be the one that screws it up!