Operation Menai Bridge

The plan includes the announcement of his death, the period of official mourning, and the details of his state funeral.

Planning for the King's funeral began almost immediately after Charles's accession to the throne upon the death of his mother and predecessor, Queen Elizabeth II.

[1][2] The death of King George VI was communicated by using the phrase "Hyde Park Corner", to avoid Buckingham Palace switchboard operators learning the news too soon.

[2][5] As of 2024, details for Operation Menai Bridge continued to be regularly updated and reviewed, in light of Charles's diagnosis with cancer that year.

[5] A 2024 biography of Charles III by Robert Hardman claimed the King's funeral arrangements have "been upgraded" to Operation London Bridge, mirroring those of his mother's.