Queen Elizabeth II (Update: the Queen has passed)

It described the coronation as a “once-in-a-generation moment” that enabled the “entire country to come together in celebration”, as well as offering “a unique opportunity to celebrate and strengthen our national identity and showcase the UK to the world”.
Just how much longer do they expect the 76-year-old-diagnosed-with-cancer king to live? I mean, I dunno either but I suspect I'll live to see another coronation.