I think just getting up and getting to the desk is a big thing. If you can do that, you're in the zone because there're so many distractions that can stop you. From my bedroom to my office isn't really that far, but I have to go via the kitchen and there's so many things that can stop me and interrupt me.

Writing is about culture and should be about everything. That's what makes it what it is.

You can't just have stuff that is free and escapist, you have to have stuff that is confrontational as well. You need stuff that is mystical but you need the realism too.

I grew up in what was not so much a familyas a genetic disaster.

We were looking for someone who could get the film [Filth] made at that kind of level, with the finance we wanted, and we spoke to a lot of people. When I met James [McAvoy] in the Soho Hotel with Jon Baird, the director, he looked about ten years old. I thought there's no way he's going to be a forty-year-old divorced alcoholic cop. I thought, really lovely guy, I'll let him and John talk and see if they get on.

The thing about drugs is that it [dealing] gives people an income to deal with, and it also gives people a compelling drama in their lives that they used to get from the office and the factory, and they're no longer there. What happens if you have everything in the hands of the state, particularly in the line of an authoritarian state, they just give people drugs to keep them doped up, to keep them passive.

People even split up by text message, they dump each other by text. Everything seems so disposable, so throwaway, but you have to engage with that if you're writing about the modern world. You've also got all these pop references that you feel obligated to make. They're just part of the bricolage of the whole thing, whether or not these are actually significant elements themselves.