The former detective continued: "What I saw was a disaster. I thought, ‘This is what you lecture detectives not to do.'"
The detectives have teamed up together to write the book, Diana: Case Solved: The Definitive Account That Proves What Really Happened, where they review new evidence in the case.
A passage from the book reads:
“Our new research has shown that the paparazzi were not to blame in Diana’s death, and that it was instead a case of someone being in the wrong place at the wrong time. We have found that on the night of her death, the $123,000 Mercedes that carried Diana and others was capable of easily out-accelerating every single vehicle that the members of the paparazzi were driving. In short, there was no neck-and-neck chase, as such a thing was an impossibility. The mass of photographers could not have kept up with her car. Period.”
Princess Diana - commonly known as 'the people's Princess' was married to the Prince of Wales from 1981 to 1996, before an extramarital affair with Camilla Parker Bowels broke up their union.
Diana and Charles shared two sons together, the Duke of Cambridge and the Duke of Sussex.