Just as a really very plain and dull girl becomes The World's Most Beautiful Woman Ever!!! just because she marries a prince, similarly, she can't be allowed to die without some absurd fairy-tale explanation. If only MI5 had thought of putting her to sleep for a hundred years as a punishment for pricking her finger on a spinning-wheel, no-one would have suspected a thing.
This has to be one of the most insane wastes of public money ever. The only reason for the inquiry was pressure from conspiracy theorists. Some eejit in our Government thought that you could calm conspiracy theorists down by holding an official state-run enquiry. Someone up there actually thought that a significant number of people would, in the light of this report, say "You know, I had thought it was an assassination by Mossad to prevent an alliance between the Church of England and Islam, but I see now that I was wrong: it was just a car crash after all. You live and learn."
Now, how about a full public inquiry into every other car crash in Paris? Or perhaps into the Moon landings?