Crowds have gathered in central London for the Trooping the Colour ceremony to mark King Charles III's official birthday, BBC reports.
The parade is one of the biggest royal and military spectacles of the year, culminating with a Red Arrows flypast watched by the royals from the Buckingham Palace balcony.
Alongside the King and Queen Camilla were the Prince and Princess of Wales with their children. Prince Louis has, at times, been a scene-stealer - but the gap-toothed, eight-year-old was on his best behaviour, chatting to his parents as the aircraft flew overhead.
The balcony moment remains a reminder of royal continuity, with King Charles standing with two future monarchs in Prince William and Prince George.
In bright sunshine, the King and Queen travelled in an open-top carriage, driving past the thousands of people lining the route from Buckingham Palace down The Mall to Horse Guards Parade.
The title Trooping the Colour comes from the "Colours" - the name given to the flags which represent the different regiments in the British Army.
It features more than 1,400 members of the armed forces as well as 200 horses and 400 musicians.
A different regiment's colours are trooped each year, with this year's being those of the Grenadier Guards.
Travelling in the first carriage were the Duchess of Edinburgh, wife of the Duke of Edinburgh, and Vice-Admiral Sir Tim Laurence, husband of the Princess Royal.
In the second carriage were the Duke of Gloucester, first cousin to Queen Elizabeth II, and his wife, the Duchess of Gloucester.
The Prince of Wales, the Princess Royal and the Duke of Edinburgh - all of whom are royal colonels - travelled on horseback in the military parade. Catherine, Princess of Wales followed in a carriage with her three children.
