King Charles hailed the work of the Commonwealth in bringing countries together as he and Britain's senior royals gathered at London's Westminster Abbey on Monday for annual celebrations for the international organisation he leads.

Multiple members of the Royal Family have gathered at Westminster Abbey for the annual Commonwealth Day Service. The subject of this year's Commonwealth Day theme, Together We Thrive, honours the “enduring spirit of the Commonwealth family”.

Middleton — who scaled her royal schedule back last year due to her cancer diagnosis — joined Prince William, King Charles, Queen Camilla, Princess Anne, Prince Richard, Duke of Gloucester and Birgitte, the Duchess of Gloucester, for the commemoration.