With the lockdown continuing to ease in most parts of the UK, there has been a rise in the number of people who are getting back in the saddle and enjoying horse riding all over again. The Queen was just one of the people who had missed riding during lockdown, and indeed the first published picture of her after lockdown was, inevitably, one of her riding a pony in the grounds of Windsor Castle. It is apt then, that horse Riding is often described as the Sport of Kings, but these days it could also be as truthfully described as the sport of the glamorous celebrity. The list of well…