Rosa Monckton will tell the broadcaster that use of the Diana tapes, exposing dialogues entered by the Princess of Waless speech coach, is outrageous

One of Princess Dianas closest sidekicks is writing to Channel 4 bosses requesting them to scrap a forthcoming documentary using private video footage which includes Diana talking about about her copulation life with Prince Charles.

Rosa Monckton, a confidante of Dianas until she was killed in a Paris car crash 20 years ago next month, will argue that the confessional videos that Diana made as part of a trend of discussion coaching amounted to therapy and that using them is an interference and cruelty that exposes Dianas right to privacy.

The documentary is due to be broadcast on Sunday 6 August and Moncktons intervention will increase pressure on Channel 4 after Dianas brother, Earl Spencer, reportedly expected the programme was fell. Spencer is believed to have grumbled the documentary would hurt Dianas sons, Prince William and Prince Harry. The broadcaster confirms that it had been in correspondence with Spencer but mounted a defence of the programme of activities claiming sound recordings, while drawn in private, were an important historical informant. The princes have declined to comment.

This doesnt belong in the public domain, Monckton told the Guardian. It is a betrayal of her privacy and of the familys privacy. I surely dont think they should be programme. The[ tapes] “mustve been” discharged to the young princes.

The key informant textile for the film, Diana: In Her Own Words, comes from tapes the princess did in 1993 with her public-speaking tutor Peter Settelen as she “was talkin about a” their own lives, ostensibly to help her improve her lectures on issues such as landmines and HIV and Aids. The tapes include her said today sex with Charles happened once every three weeks and that aged 24 and already married, she descended profoundly in love with an unnamed is part of the royal household, widely thought to have been the close protection officer Barry Mannakee, who subsequently died in a motorcycle coincidence. She recalled that in 1979, two years before their marry Charles chatted me up. He was like a bad rash.

She contributed: He was all over me and I concluded, you are familiar, Urgh. Whereupon he leapt upon me and started caressing me and everything, and I reputed, Waaah! This is no longer what people do.

She likewise talked about the engagement interview with Charles in which he was asked whether he was in love and answered whatever in love symbolizes. She recalled to Settelen that she had said yes, she was in love, like the fat Sloane Ranger that I was.

The frank film is understood to have led to anxiety in palace curves over whether it is a significance, at least in part, of Prince William and Prince Harrys strategy of speaking out emotionally and in highly personal periods in the run up to the 20 th commemoration of their babies demise. The monarches cooperated with both the BBC and ITV on recent films and made a series of emotional statements about their grief. It celebrated a leaving from the usual imperial etiquette of carefully guarding private matters and differentiated with its final decision not to say anything about their private affections on the 10 th anniversary of her fatality in 2007, when they staged a pop concert at Wembley stadium in their babies memory.