Queen mourned at Buckingham Palace

STORY: The death of the queen, Britain's longest-reigning monarch and a towering presence on the world stage for seven decades, has drawn condolences from around the world.

Waking up to their first day without a woman once described by her grandson Harry as "the nation's grandmother," members of the public began gathering again outside Buckingham Palace to lay flowers and take photos of the growing memorial there.

Billboards across the city displayed messages of condolence and newspapers ran front-page photo tributes to the queen.