You are supposed to look at the unimproved and think about the way that we dismiss so-called 'chavs' and certain immigrant classes that are considered unworthy, the "undeserving poor". Those kind of prejudices are getting worse.

Social mobility decreased under Labour and under the current government it is reversing. The differences between the poorest and richest are returning to Victorian levels. We don't have open sewers and infant mortality rates at fifty percent but in economic terms we're getting to a level of disparity we haven't seen for a couple of hundred years. And we're getting there very quickly.

Holman's world is a worst case scenario but it's healthy to examine extreme possibilities. If the technology that is used for genetic enrichment in Genus had been distributed equitably, across society, it could have been nirvana, a great world where people don't fear the diseases that we die from. The problems that arrive are more to do with resource hording than technology itself.

What I imagined doesn't require anti-gravity beams or anything too spectacular, just advances in analysing different genes, finding out what they can do and recombining them.

New technologies are a good thing but we must consider how they will impact on us so that, when they become achievable, they aren't allowed to run amok.

At the moment we seem to be heading in the opposite direction. However you dress it up, it's pretty obvious who is being affected by the government's cuts.

I wanted to write a book that imagined where advances in the study of genetics might lead us. Holman was the first character who came to me: I envisaged the misshapen offspring of beautiful, wealthy parents. Then I realised that he bore a striking resemblance to Toulouse-Lautrec. I developed that, made Holman an alcoholic who lives among hookers, an artist tortured by his disability.