It's been said that alcoholics are egomaniacs with low self -esteem. It's the prefect description. Being larger than life and yet your pride is crushed with self- loathing.

I grew up in Deptford in south London, and at that time I used to wear toppers, loon pants and tonic suits from shops like Take 6 and Topman. I was a bit of a soul boy, but I had a very eclectic taste in music - I was into James Brown and Bowie; and I was the only kid in the neighbourhood who would also be listening to Chopin.

Rather like Batman, I embody the themes of the movie which are the values of family, courage and compassion and a sense of right and wrong, good and bad and justice.

It's always hard when you're playing someone for a lot of people out there who are going to see the movie after reading the books. There's a communion between a reader and the writer, so people will have an idea who Sirius Black is and I might not be everyone's idea of that.

There will always be spies. We have to have them. Without them we wouldn't have got Osama bin Laden - it took us years, but it happened.

I want my weekends off and I want to put my kids to bed. Those are good reasons to want to be in 'Batman 2'.

Change is vital to any actor. If you keep playing lead after lead, you're really gonna dry up. Because all those vehicles wean you away from the truths of human behaviour.