King Charles III marked his official birthday on Saturday with the Trooping the Colour parade in London, his third such ceremony since ascending to the throne. The monarch rode in a Queen Victoria-era Ascot Landau carriage down The Mall with Queen Camilla, flanked by thousands of soldiers, musicians, and cheering crowds.

The royal family gathered in full for the occasion. Prince William rode on horseback as part of the mounted procession, a role that carries particular significance as his seniority within the family grows. Kate, Princess of Wales, traveled in a separate carriage with their children — Prince George, Princess Charlotte, and Prince Louis — all three of whom were visible smiling and waving to the crowds.

The ceremony at Horse Guards Parade featured more than 1,400 soldiers from the Household Division and the King’s Troop Royal Horse Artillery, alongside over 400 musicians from the Massed Bands. The King formally inspected the troops and offered a salute from the dais as the regiments passed before him. The Irish Guards trooped their colour at Saturday’s ceremony.

Charles wore the uniform of the Grenadier Guards, a regiment he has been associated with since his time as his mother’s aide-de-camp. He appeared in good health and participated in the full duration of the outdoor ceremony, which drew the largest crowds since the Queen’s Platinum Jubilee in 2022. Public interest in the event has remained high following years of significant change within the royal family.

Princess Anne and other senior royals accompanied the family on the balcony of Buckingham Palace for the traditional finale, which included a flyover by the Royal Air Force. Aircraft from the Red Arrows display team and various historic and modern planes flew over central London as the family watched from above The Mall.

Tens of thousands of people lined the processional route from Buckingham Palace to Horse Guards and back, many having arrived before dawn to secure viewing positions. Spectators came from across Britain and from dozens of countries. The event generates significant economic activity for central London each year, with hotels, restaurants, and retailers reporting strong custom.

Charles has used his Trooping appearances to signal continuity of the monarchy while also making subtle changes to tradition. Saturday’s ceremony was notable for the visible prominence given to the next generation, with George, Charlotte, and Louis taking a more central role in the carriage procession than in prior years. Royal watchers took this as a sign of the family’s long-term approach to public engagement. The event was broadcast live across the United Kingdom and internationally, attracting large audiences at a time when British public interest in the monarchy has remained steady despite broader debates about the institution’s future. Details of the royal family’s international engagements and ceremonial visits have drawn wide coverage this month. Britain is also preparing for major domestic policy announcements in the coming days.