Queen Elizabeth II had a variety of flags to represent her personally and as head of state of several independent nations around the world. They were usually used on any building, ship, car, or aircraft where she was present.
Princess Elizabeth's standard flying in the background, during her 1951 royal tour of Canada
The Royal Yacht Britannia flying the Royal Standard and the Flag of the Lord High Admiral, 1977
The Queen's Canadian Standard flying on her car, at the opening of the 1978 Commonwealth Games in Edmonton, Alberta
The Queen's Australian Standard being used by her at Brisbane, 1982
A Commonwealth realm is a sovereign state that has Charles III as its monarch and ceremonial head of state. All the realms are equal with and independent of the others, though one person, resident in the United Kingdom, acts as monarch of each. The phrase Commonwealth realm is an informal description not used in any law.
Charles III, the reigning sovereign of each of the Commonwealth realms since 2022
High Commissioner of Belize to the UK meets with the British Minister of State for Foreign and Commonwealth Affairs. High Commissioners act as liaisons between the governments of the Commonwealth realms.
Prince George, second in the line of succession
King George VI, with Queen Elizabeth, grants royal assent to bills in the Senate of Canada, May 1939