Richard Hughes (jockey) a change in the rules regarding horse welfare. On 13 October 2011, it was announced that Hughes was giving up his racing licence and quitting the sport out of protest at the ban. Hughes did not follow up on this threat and on 15 October 2012 he equaled Frankie Dettori's record of winning seven races in a single meeting by winning seven out of eight races at Windsor Racecourse. The following month, he claimed his first British flat racing Champion Jockey title with 172 winners over the season. In May 2013, after a long wait, he won his first British
Ryan Moore (jockey) stable jockey from November 2011. Moore had already won in big races for O'Brien while retained by Stoute, including at the Breeders' Cup and Royal Ascot. Stoute's stable had seen a downturn in fortunes, while O'Brien had provided Moore with big winners. O'Brien also had the ante-post favourites for the next season's Classics. Moore was keen on the job, but reluctant to move his family from Newmarket to County Tipperary. They negotiated a compromise that allowed Moore to live in England, while riding for O'Brien in Ireland at the major meetings. Instead, O'Brien's son Joseph became the main rider for