Buckingham Palace has quietly begun rehearsals for the day King Charles III passes, a process codenamed Operation Menai Bridge—a meticulously crafted plan covering every minute detail of the aftermath.
What Is Operation Menai Bridge
Operation Menai Bridge is the official protocol activated upon the monarch’s death. The name references the Menai Suspension Bridge in Wales, nodding to Charles’s long tenure as Prince of Wales. It defines a structured timeline from the announcement of death to the official mourning period and onward to a state funeral and private burial.
Initial planning for the operation began almost immediately after Queen Elizabeth II’s funeral in September 2022 and has been continually refined, particularly following Charles’s cancer diagnosis in early 2024.
Why Rehearse Now
Insiders have reported that Prince Charles’s declining health—he’s currently receiving treatment for cancer—has prompted more rigorous walkthroughs of the protocol. A senior Royal Protection Officer confirmed that planning began shortly after Charles became monarch… it’s got to be in the back of your mind.
One palace aide emphasised These are rehearsals no one wants to do but everyone has to be ready. Every detail is planned from who calls whom to how flags are lowered. The process is described as operating with military level discipline.
Key Components of the Plan
1. Notification Sequence “Call Cascade”
Upon the Kings death his private secretary will first notify the Prime Minister and the Privy Council Office. This triggers the call cascade, alerting cabinet secretaries, ministers, and senior civil servants.
2. Mourning Protocol
Official flags across Whitehall will be lowered to half mast and Buckingham Palace will issue a press statement. A dark edged notice will also be affixed to the gates of Buckingham Palace just as happened after Queen Elizabeth’s passing.
3. Succession and Titles
Prince William will instantly become king. Catherine Duchess of Cambridge will assume the title of queen. Camilla currently Queen Consort will become Queen Dowager.
4. Period of Mourning and Funeral
Days following the death will be denoted D day D1 D2 and so on. A state funeral expected to resemble Queen Elizabeth’s lavish event will take place about a week later capped by a private interment in Windsor.
Historical Context A Pattern of “Bridge” Codenames
- Using prominent bridge names as codenames is a longstanding royal tradition. Past operations include
- Operation Forth Bridge Prince Philip 2021
- Operation Tay Bridge Queen Elizabeth The Queen Mother 2002
- Operation London Bridge Queen Elizabeth II 2022
This bridge themed naming scheme helps prevent leaks as news travels securely through discreet communications.
The Role of Operation London Bridge
Operation Menai Bridge closely mirrors the thoroughness of its predecessor Operation London Bridge which had been rehearsed for decades and involved coordination across government security services media and broadcasters.
During Elizabeth II’s death the iconic phrase London Bridge is down set the plan in motion.
It remains to be seen whether a similar code phrase will be used for Charles’s plan but the structure is maintained.
Why It Matters
The monarchy values continuity above all. Planning for the monarch’s death isn’t morbid—it ensures a seamless transition minimizes public confusion and upholds national stability.
With Charles continuing his royal duties palace officials are preparing for both his recovery and a worst case scenario. As one source noted there may be a wish for no one to have to do these rehearsals but statecraft depends on readiness.

Looking Ahead
- As Operation Menai Bridge drills continue several questions remain
- Will a unique code phrase be enacted
- How much will the plan evolve after the Queen’s solemn precedent
- How day to day will William’s eventual transition be
Ultimately protocol demands that when the time comes although hopefully not for many years the nation will know exactly what to do how and when.