The nastiest person on Twitter has quit Twitter. Because I’m so generous I shan’t mention his name. All I’ll say is he that he co-wrote one of the 1990s’ warmest, funniest, daffiest sitcoms — which is possibly what made his attack-dog vitriol so especially hurtful. It was like being stabbed with a fork by Gyles Brandreth, kneed in the groin by your vicar, given the middle finger by the Queen.