A weekend of celebrations marking the Queen's 90th birthday has begun with the arrival of members of the Royal Family at a national service of thanksgiving for the monarch's life.
At St Paul's Cathedral, leading figures from the worlds of politics, religion - and hundreds of ordinary people recognised for their service - gathered to mark Her Majesty's 90 years.
The service featured a sermon by the Archbishop of Canterbury, as well as prayers spoken by a 90-year-old Welsh widow who was born on the same day as the Queen.
Prince Harry and the Duke and Duchess of Cambridge were all present at St Paul's
Sir David Attenborough and Paddington Bear creator Michael Bond, who have both turned 90 this year, also attended.
The Queen's long life has seen her reign for more than 64 years, becoming England's longest reigning monarch and an enduring emblem of the nation.
The monarch turned 90 on April 21, but she traditionally has two birthdays - and celebrations for her official birthday will be marked by the Trooping the Colour ceremony being staged tomorrow.
Click below to see a special film released by the three services, featuring personnel around the UK and deployed overseas wishing the Queen a happy birthday:
Prince Philip, meanwhile, celebrates his 95th birthday today.
The Queen's consort was born on June 10, 1921 and his milestone will be marked with traditional gun salutes.
A weekend of celebrations is planned to mark the monarch's milestone and, after Saturday's Trooping the Colour ceremony, a Patron's Lunch street party for 10,000 revellers will be staged in The Mall.
The Massed Bands of the Household Division wowed the crowds this week in the build-up to the celebrations
Crowds had gathered around the edge of Sir Christopher Wren's famous cathedral, and when they saw the Royal group step off a coach they cheered.
Former Prime Minister Tony Blair also arrived at St Paul's for the service.