John Warren, the racing advisor to Queen Elizabeth, previously hinted that it was Camilla - rather than Charles - who had the greatest passion for the sport.
He said: “He has always followed it, but it has been his mother’s interest so it has been at arm’s length. He owns a few horses himself, in particular with the [then] Duchess of Cornwall. She is absolutely besotted by racing.”
Meanwhile, it was recently revealed that the royal had commissioned a play in the style of Jane Austen.
Camilla is keen for the production to showcase the Pride and Prejudice author’s “brilliant sense of humour” and it will be performed at her charity’s first literary festival.
Vicki Perrin, chief executive of Camilla’s Reading Room, told the Daily Telegraph newspaper about the play, billed for a June 11 performance at Hampton Court Palace: “Her Majesty’s title for this performance will be revealed on the day, but I can tell you that it reflects her great love of Austen, as well as her unique and brilliant sense of humour.”