I did long-term re-insurance claims. Asbestos, health hazards, pollution. It was very boring. But I've got quite a mathematical brain and it paid well.
My work isn't overtly political, although it is sometimes painted in places where I don't have permission to paint, so that could be construed as a political statement.
I remember finding this book, which showed a New York subway train that had been covered in so much graffiti you couldn't recognise it was a train. I thought, ‘I want to do that… how do you do that?'
I used to run away from the cops and now I stand and chat with them about my art. I'm older now and it is harder to run away from them. It would be embarrassing for an older man to get arrested by someone half your age. So I gave up running.
I'm not a massive artist by any stretch of the imagination. Yes, I've been in papers and magazines, but you never have any idea if anyone actually reads it or pays any attention.
My philosophy through all my work, be it on canvas or on the street, is about pushing boundaries and not going with the flow because everyone else is doing something a certain way.
A friend of mine back in 1989 did an illegal rave in Vauxhall. He got Keith Haring to come along and tag the side of the wall. My friend cut it out of the wall and he kept it under his bed for 20 years. Then a few years ago he asks me if I want to buy it... so I spent £12,000 on a Keith Haring.
I respect Virgin Atlantic's brave and challenging attitude and the way it goes against the grain, so I jumped at the chance to be part of the first ever Gallery in the Air.