What is Operation London Bridge code for?

Operation London Bridge (also known by its code phrase London Bridge is Down) the plan for what happens in the event of the Queen’s death. It includes planning for the announcement of her death, the period of official mourning, and the details of her state funeral. Some critical decisions relating to the plan were made by the Queen herself, although some can only be made by her successor. It has been in place since the 1960s, but were refined around the turn of the century.

The codename Operation London Bridge primarily refers to events that would take place in the United Kingdom. In addition to the United Kingdom, other Commonwealth realms where Elizabeth II reigns as monarch have developed their own plans for what will happen in the days after her death.

King George VI's death was coded Hyde Park Corner. Prince Philip's was Operation Forth Bridge. Operation Hope No was the funeral plan for Sir Winston Churchill.