The U.K. began its four-day celebration to mark Queen Elizabeth II's Platinum Jubilee with a military parade and a gathering of large crowds in central London.
The end of the air show and military parade will be witnessed by the Queen and working royals from the balcony of Buckingham Palace.
Many people carrying the Union Jack flag have gathered near Buckingham Palace and London's Trafalgar Square to watch the parade.
The 96-year-old is Britain's longest-reigning monarch and the first to complete seven decades on the throne.
The celebrations come after a difficult few months for the Queen who contracted Covid-19 in February and has since had to cut back on public appearances due to health concerns.
Buckingham Palace said that the Queen may not be present at many of the Jubilee events due to mobility problems.
The start of the parade was disrupted by two people who were arrested.
I would like to thank everyone who has been involved, and hope that the coming days will give us an opportunity to reflect on what has been achieved.
Prince Charles, William and Kate will be on the Buckingham Palace balcony with the Queen. George, Charlotte, and Louis were in a carriage for the first time at the parade and are expected to be a big part of the event. The Queen's other grandson Harry and his wife Megan will not be seen on the balcony as they are no longer working royals.