I don't know if you saw this, but Politico leaked this on 9/3/2021:

https://www.politico.eu/article/queen-elizabeth-death-plan-britain-operation-london-bridge/

Operation London Bridge is the plan for when QE 2 dies. It will be called D-Day. It will be followed by 10 days of mourning (darkness).

Boris Johnson's comm is likely red double decker buses which he is associated with because:

https://www.theguardian.com/politics/2011/may/27/boris-johnson-and-the-routemaster

and this:

https://www.mylondon.news/news/news-opinion/boris-johnsons-routemaster-london-bus-17025921

I don't know if you saw this, but Politico leaked this on 9/3/2021:

https://www.politico.eu/article/queen-elizabeth-death-plan-britain-operation-london-bridge/

Operation London Bridge is the plan for when QE 2 dies. It will be called D-Day. It will be followed by 10 days of mourning (darkness).

Interesting stuff.