Cartier International Day is typically one of the most star-studded sporting events of the year. The event hosts the Queen's Cup Final in the sport of polo. The actress Michelle Dockery, who stars in Downton Abbey, was one of those attending the prestigious event in Windsor.
The world's first Polo match involving injured service men and woman has taken place at Tidworth in Wiltshire.
Two teams of combined able-bodied and disabled riders played for the inaugural Para-Polo Heroes Cup at Tedworth Park.
The event was part of the 'Best Of British Polo Day' and helped to raise money for the charity Help For Heroes. David Wood reports.
The Duke of Cambridge and Prince Harry enjoyed a charity polo match at Coworth Park near Ascot, in Berkshire, today.
They were playing in the Audi Polo Challenge, a two day event to raise tens of thousands of pounds for the Royal Marsden Hospital, Skillforce and Sentebale.