Not being much of a royalist (although admiring of the Queen's dedication to duty over the last trillion years - somewhere around the house I have the little tin box with the medal that we all got in primary school on Coronation day), and therefore not having read most of this thread, and therefore apologising if this has come up before but...all centenarians get a letter from the Queen. Would she have handed Philip's to him over the breakfast marmalade, or would he have had to wait in the post like the rest of the peasantry?
I can foresee vast amounts of TV coverage when Elizabeth goes to meet her Maker, not so much on Elizabeth herself, but on what has happened to the UK since that June day in 1953. A sort of "how are the mighty fallen". Remember how Churchill saw the beginnings of "a new Elizabethan age"? Of course, it went into reverse, as the UK went from pretending to be still a world power (this status had vanished in the Second World War) to, well, pretending to be a world power with even less justification. But, as Jean-Baptiste Karr said, "Plus ça change..." - the place, now as then, is run by clueless upper-class twits, and it shows. Perhaps under King Charles (or whatever his regnal name would be - I'm betting on George VII, as neither of the two previous Charles (never mind the Scottish one) is a good precedent), the UK will become more realistic. Charles has already spoken of trimming back the royal household, which cannot but be a good thing.
I daresay we won't be seeing a parade like this - no African colonial troops!