William Haggas is a British Thoroughbred racehorse trainer, based at Somerville Lodge stables in Newmarket, Suffolk.
[2][3] He started his working life in his father's textile factory, but quit after three months and headed to Newmarket.
Largely thanks to the exploits of Dancing Rain, he finished joint 7th in the 2011 British Champions Series trainers' table.
He trained his first winner for the Queen (Elizabeth II), when Purple Spectrum won a maiden race at Windsor on 12 May 2014.
He has also trained winners of the German 2,000 Guineas, Topkapi Trophy and Hong Kong Derby.