Sir Henry Richard Amherst Cecil was a British flat racing horse trainer. Cecil was very successful, becoming Champion Trainer ten times and training 25 domestic Classic winners. These comprised four winners of the Derby, eight winners of the Oaks, six winners of the 1,000 Guineas, three of the 2,000 Guineas and four winners of the St Leger Stakes. His 1000 Guineas and Oaks successes made him particularly renowned for his success with fillies. He was noted for his mastery at Royal Ascot, where he trained 75 winners.

The Oaks Stakes is a Group 1 flat horse race in Great Britain open to three-year-old fillies. It is run at Epsom Downs over a distance of 1 mile, 4 furlongs and 6 yards, about 1½ miles, and it is scheduled to take place each year in late May or early June. It is the second-oldest of the five Classic races, after the St Leger. Officially the Betfred Oaks, it is also popularly known as simply The Oaks. It has increasingly come to be referred to as the Epsom Oaks in both the UK and overseas countries, although 'Epsom' is not part of the official title of the race.)