I stumbled across this article from December 11, 2006:
https://www.nbcnews.com/id/wbna16153112
Report: U.S. bugged Princess Diana’s phone
The Central Intelligence Agency was bugging the telephone conversations of Britain's Princess Diana on the night she died, a British newspaper reported.
For as much as I've delved into this subject, I have never heard this before. Wow.
"...and it took the ambulance 1hr 15min to travel the 3 odd miles to a hospital."
They needed time to clear out the hospital so they could switch out Diana with the dead body double. <just kidding!>