Vixen
Penultimate Amazing
Which is why I asked the question. The required logic is 'MI5' AND no seatbelt, as you suggested.
So, how would 'MI5' make the car crash in the manner that it did AND simultaneously make sure Diana did not wear her seatbelt?
The logic is: 'Diana was a loose cannon and Phil/Charles/MI5 wanted her shall we say, tamed'. Reasoning: her close link to the heir apparent and the future heir apparent, central to UK constitution. Mohammed 'Al'-Fayed refused British citizenship and being knighted as he desperately wanted [are we seeing MI5 intervention here advising against him and his like?]. Diana consorting with his 'playboy' son.
The fact Diana was not wearing a seatbelt when she died does not disprove that she was under speculated close surveillance.
Are you seeing the lapse in logic yet in saying, 'She died because she did not have her seatbelt on, therefore she was not under surveillance by MI5'?