I've always thought of acting as a tool to change society. I watch a lot of actors and I see panic in their eyes because they don't know why they act and I know why I act. Whether I'm a good or a bad actor, I know why I do it.

Rather than something like King Kong where I really went after studying gorillas in the wild and captivity. I based Caesar [ from the Rise of the Planet of the Apes] on a real chimpanzee and I worked with Terry [Notary] on a lot of chimpanzee movement.

My agent told me they were casting for the voice of Gollum. I hadnt read The Lord of the Rings, but I read the script and realized what an amazing role it was. I developed a voice for the audition tape, then met Peter Jackson and Fran Walsh at the auditions and fell in love with them both.

The matter is - we are actors playing roles [in Planet Apes] and they happen to be in this instance apes but there's no difference. In the scenes that we're playing, if we were to block out the scenes as actors in costumes, it would be no different.

I'm working from home a lot. That's very unusual because I'm away a lot, sometimes working on the other side of the world for long periods of time. So, it's hard to manage in the sense that I want to be the best dad I can be but it's almost harder when you have your kids outside the door.

I never felt totally, 100%, patriotically English... I'd seen a lot of the world by an early age - sort of spent a lot of time traveling around Lebanon and I'd seen Babylon, and Damascus, and all sorts of places in the Middle East by the time I was ten. Then we'd return to Ruslip in West London... Done a fair bit of traveling really.

And 'Sex Drugs Rock Roll' was a very transitional film for me in that I was one of the producers and you know, came up with the idea with the writer and the producer, as well. But, it was a very collaborative event. You know, I really love working in that way.