The Queen and senior royals joined servicemen and women past and present at the annual Festival of Remembrance as the nation remembered its war dead on Armistice Day.
The march was diverted and wreath laying at the County Tyrone town's cenotaph was postponed after the area was sealed off. Her eldest son Charles instead stepped forward following a nationwide two-minute silence, placing a wreath of poppies at the monument close to parliament.
"He is, however, a member of the Royal Family and at times his duties require him to don the uniform of a tied or associated regiment and does so with a beard, as did his great-great-grandfather before him".
In her place, Prince Charles will lay a wreath at the cenotaph.
Former prime ministers Tony Blair, David Cameron, and Gordon Brown attended, alongside Labour leader Jeremy Corbyn, Lib Dem leader Vince Cable, Home Secretary Amber Rudd, and Prime Minister Theresa May.
Photo Queen Elizabeth II and Prince Charles in October.
Buckingham Palace announced the change last month, a move seen by royals observers as a significant step in the shift to the monarchy's next generation. The queen has missed the ceremony only six times in her 65-year reign and handing over her role to Charles is a visible sign to her subjects that she is reducing her official duties.
There were special performances by Melanie C, Alfie Boe & Natalie Lowe, Emeli Sande and others all in tribute to the armed forces.
They were joined by the Duchess of Cornwall, the Countess of Wessex, the Duchess of Cambridge, the Duke & Duchess of Gloucester, the Duke of Kent, Princess Alexandra and Sir Tim Laurence.
Millions of people fell silent as events were held across the country on Saturday to mark the 99th anniversary of the end of the First World War.
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