Ken Wharfe, the Princess's former Metropolitan Police bodyguard, told The Daily Telegraph: "If these parents were so concerned that this information was relevant or had some general import, then they should have delivered it to the inquest.
"Why has it taken so long to air this new information? It seems so shallow to me. I just think it's a bit of a publicity stunt.
"For what reason I'm not certain, but in the absence of any real evidence, I'm sure this will go away."
More top news
Coronation Street stars paid tribute to "caring, loveable and funny" Anne Kirkbride, who played Deirdre Barlow for more than 40 years.
Queens Parks Rangers defender Rio Ferdinand has announced his retirement from football after his wife's recent death.
A promising start to the weekend - fine and bright for most of us but showers will crop up across northern Scotland.