Photos: British royals gather for first Easter of King Charles' reign

King Charles and senior British royals gathered at Windsor Castle for their traditional Easter service on Sunday, the first of the new monarch's reign.

Charles was joined by his wife Camilla, the queen consort, and his extended family including son and heir Prince William, his wife Kate and their three children, in a walk from the castle to the nearby St George's Chapel.

The occasion, one of the few events which bring all the royals together in public, is particularly poignant this year, being the first since the death of Queen Elizabeth and also falling two years to the day since her husband Prince Philip died. Both are buried in the King George VI chapel at Windsor.

It is also the 18th wedding anniversary for Charles and second wife Camilla, who tied the knot in Windsor in 2005.

Zara Tindall (C) and her husband Mike Tindall (2L) walk with their children Mia Tindall (L), and Lena Tindall (centre R), ahead of Britain's Princess Beatrice of York and her husband Edoardo Mapelli Mozzi, and Britain's Prince William, Prince of Wales (3R), Britain's Prince George of Wales (2R) and Britain's Princess Charlotte of Wales (obscured), as they arrive for the Easter Mattins Service at St. George's Chapel, Windsor Castle on April 9, 2023.

King Charles III leaves after attending the Easter Mattins Service at St George's Chapel at Windsor Castle in Berkshire, Britain April 9, 2023.

The Queen Consort leaves after attending the Easter Mattins Service at St George's Chapel at Windsor Castle in Berkshire, Britain April 9, 2023.

Britain's Prince William, Prince of Wales (2L), Britain's Prince George of Wales (L), Britain's Catherine, Princess of Wales (R), Britain's Princess Charlotte of Wales (C) and Britain's Prince Louis of Wales arrive for the Easter Mattins Service at St. George's Chapel, Windsor Castle on April 9, 2023.

The Prince and Princess of Wales with Princess Charlotte and Prince Louis after attending the Easter Mattins Service at St George's Chapel at Windsor Castle in Berkshire, Britain April 9, 2023.

Britain's Prince William, Prince of Wales (2R) shakes hands with David Conner, Dean of Windsor (L) after attending the Easter Mattins Service at St. George's Chapel, Windsor Castle on April 9, 2023.

Britain's Princess Eugenie of York (L) and her husband Jack Brooksbank arrive for the Easter Mattins Service at St. George's Chapel, Windsor Castle on April 9, 2023.

The Duke and Duchess of Edinburgh with the Earl of Wessex attending the Easter Mattins Service at St George's Chapel at Windsor Castle in Berkshire, Britain April 9, 2023

The Prince and Princess of Wales with Prince Louis, Prince George and Princess Charlotte attending the Easter Mattins Service at St George's Chapel at Windsor Castle in Berkshire, Britain