"Gillray was ballsier than Hogarth. He was so successful that he affected the Government's standing and kept the Jacobins at bay. Nobody could do that now. The nearest we get to it is Spitting Image or Rory Bremner. But it's essential to keep on trying, and in Gillray the savagery of the attack is what counts. I love his obsession with vulgar bodily functions. Everyone thought he was strange – he never justified himself. I find that interesting. My choice is the Toadstall upon a Dung-hill, where Pitt grows out of royalty. It's a good double swipe, at a politician and a monarch."