Elizabeth II is Britain’s longest serving monarch, but at some point her reign will come to an end – and the outpouring of grief over her passing will be immense. “It won't just be sombre dress and a minute of silence at sports games — it'll be a punch to the gut of the national psyche,” says Business Insider. While there is some level of uncertainty as to what will actually happen in the immediate aftermath of her death, some aspects have been meticulously planned. What is Operation London Bridge? The first plans for the Queen’s death, codenamed ‘London Bridge’, have been in place since the 1960s, but were refined around the turn of the century.