Fillies' Mile
In late 1999, it was announced that Gosden would move to Manton for the beginning of the 2000 season. He quickly enjoyed major successes, in May 2000, he won the 1,000 Guineas Stakes with Lahan. Later in the season, he won both Group One races held at Ascot with Observatory in Queen Elizabeth II Stakes and Crystal Music in the Fillies' Mile. In 2001, he won the Prix de la Forêt with Mount Abu, and the Prix Marcel Boussac with Sulk.