In a historic Royal ceremony, King Charles III led his historic first birthday parade as monarch in front of the Queen and other members of the Royal Family on London's Horse Guards Parade.
The Trooping the Colour is part of the annual calendar of big royal events and for the first time it was with King Charles in the leading role.
There may have been a moment of poignancy for the King too. Just a year ago, at the Platinum Jubilee, it had been his mother on the same balcony, appearing before the crowds.
The King took has part in his first Trooping the Colour as monarch on horseback.
The King's horse appeared to be a little skittish at the start, but calmed down as the event went on.
It is the first time a monarch has ridden on horseback at the event in 30 years, when the late Queen rode her horse, Burmese, in 1986.
He was joined by the other royal Colonels on horseback - the Prince of Wales and the Princess Royal.
The Duke of Edinburgh also rode during the ceremony in his role as Colonel of the 1st Battalion London Guards.
The ceremony started at Buckingham Palace, with the King and senior royals travelling down The Mall towards Horse Guards Parade.
The colour - or regimental flag - was then trooped in front of hundreds of Guardsmen and officers from the 1st Battalion Welsh Guards.
There was music and marching while the King carried out an inspection of the soldiers - moving slowly along the line as they stand in formation.
After he coursed through the Mall, the King received the royal salute as the Colonel-in-Chief of the Household Division's regiments.
The senior royals on horseback were joined by the Queen, the Princess of Wales and her children, Prince George, Princess Charlotte, and Prince Louis, who travelled in a carriage to support their grandfather.
