As Harry's new documentary turns the spotlight on polo, photos from the Mail's archive reveals how the Sport of Kings has captivated Britain's Royal Family for decades

With its heady mix of horses, competition and tradition, polo - dubbed the Sport of Kings - has captivated Britain's male royals for decades. The Duchess of Sussex's first public appearance with Prince Harry was at a polo match, while Kate greeted Prince William after a match with a kiss. The Duke of York, later crowned King George VI, playing in a polo match at the Ranelagh Club in south-west London in 1922 Prince William, pictured with Prince Harry, takes aim at the ball during a match at the Beaufort Club in the Cotswolds in 2002 Harry and Meghan share a kiss after the prince won a charity match in 2018 He served as chairman of the Ranelagh Club in south-west London, a report in the Daily Mail in 1930 shows. Queen Mary presenting the Duke of York's polo cup to Louis Mountbatten at Ranelagh while the future George VI watches on in 1931 George VI pictured at a Lords versus the Commons polo game in 1937 George VI, holding his polo equipment, after playing in a match in Maldon in 1932 He fell off his bicycle three times and 'his antics had the Queen, Prince Charles, Princess Anne and the Duke and Duchess of Kent roaring with laughter,' the Daily Mail reported at the time. Meghan watches Harry take part in a polo game at Coworth Park in Berkshire in 2017 William and Kate join in the fun at the Royal Charity Polo Cup in Windsor last year Chelsy Davy, Harry's former girlfriend, Princess Anne's daughter Zara and Kate, now the Princess of Wales, watch a game at Tedworth Park Polo Club, Wiltshire, in 2006 Harry and William take part in a game at Tedworth Polo Club in Wiltshire to raise money for charity in 2002 Harry 'is by nature very optimistic as a person and always pushing boundaries, always challenging people, and that’s how he plays polo,' professional player Malcolm Borwick has told the Express.