Saturday’s event may be steeped in pomp and pageantry, but it carries deeper meaning for the British monarchy.

Ahead of Saturday's festivities, King Charles III also honored a handful of celebrities and public figures, including David Beckham, Gary Oldman and Elaine Paige.

Senior working royals including Prince William, Kate Middleton, Princess Anne, Prince Edward and Queen Camilla will reportedly take part in the king's birthday parade.

Britain's King Charles and Queen Camilla ride a carriage as part of the Trooping the Colour parade which honours King Charles on his official birthday, in London, Britain,. REUTERS/Isabel Infantes LONDON (Reuters) -Britain's King Charles and other senior royals wore black armbands at the "Trooping the Colour" military parade on Saturday as a mark of respect for the victims of the Air India plane crash.