This month marks the tenth anniversary of the death of Nigel Dempster, once the world’s best-known gossip columnist. For three decades he was paid a fortune by the Daily Mail to provide juicy tittle-tattle about the royal family (he was a close friend of Princess Margaret), the aristocracy (particularly priapic minor baronet Dai Llewellyn), tycoons including Jimmy Goldsmith and racing figures such as Robert Sangster, as well as mainstream TV stars like David Frost and Robin Day.