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They rehearse a scenario of that nature every year. Apparently somebody at BBC news turned up for work while the Diana coverage was going out and offered his congratulations on the inventive scenario they had come up with for that year's rehearsal.
There have also been occasions where rehearsals in the past have led to on-air reporting (elsewhere in the world I might add) of the death being rehearsed. Rehearsals these days are carefully arranged so that anyone happening upon the footage (which is pretty hard to find) is immediately aware of its rehearsal status.
after the 9th September this year, her Majesty becomes the longest reigning monarch in history (according to Wikipedia) so it may be a rehearsal for such an obit scenario. Bringing the blinds down would be a good way to keep the public from starting to worry.
They rehearse a scenario of that nature every year. Apparently somebody at BBC news turned up for work while the Diana coverage was going out and offered his congratulations on the inventive scenario they had come up with for that year's rehearsal.
There have also been occasions where rehearsals in the past have led to on-air reporting (elsewhere in the world I might add) of the death being rehearsed. Rehearsals these days are carefully arranged so that anyone happening upon the footage (which is pretty hard to find) is immediately aware of its rehearsal status.