The divots are flying at London’s last remaining polo ground, where Princes William and Harry and Elle ‘the Body’ Macpherson have all played chukkas — and it’s nothing to do with the royal sport. Ham Polo Club is at the centre of a toxic row with its well-heeled neighbours, including Lady Annabel Goldsmith, the socialite who inspired the name of Annabel’s nightclub in Mayfair. Her son Ben Goldsmith, who is a Government adviser on the environment, has branded the club ‘gross’ for digging up its plastic exercise track and leaving the polluting material heaped up in the soil.