William and Harry vent criticism of journalist, BBC over 'deceitful' Diana interview

London - William said the interview had made "a major contribution" to the demise of his parents' relationship.

Princes William and Harry on Thursday hit out at the BBC and journalist Martin Bashir over "the deceitful way" Bashir obtained an explosive TV interview with their mother Princess Diana in which she detailed her troubled marriage to Prince Charles.

Their stinging criticism came hours after an independent internal inquiry found Bashir had used falsified documents to get his sensational 1995 sit-down with Diana, and that BBC leaders had failed to adequately probe how he had arranged it.

William said the interview had made "a major contribution" to the demise of his parents' relationship, while the BBC's oversight failures had "contributed significantly to her fear, paranoia and isolation" in her final years.

Diana and Charles formally divorced in 1996. She died aged 36 in a high-speed car crash while being chased by paparazzi photographers in Paris the following year.

"It is my firm view that this Panorama programme holds no legitimacy and should never be aired again," William added in a lengthy statement read in-person from Kensington Palace.

"It effectively established a false narrative which, for over a quarter of a century, has been commercialised by the BBC and others," he said, noting the narrative now "needs to be addressed".

In his own release, Harry said the report was "the first step towards justice and truth" but that the deceptive practices exposed were still widespread today — and had played a part in his mother's death.

"The ripple effect of a culture of exploitation and unethical practices ultimately took her life," he added.

Harry's comments echoed those of Diana's brother Charles Spencer, who earlier blamed the fallout from the interview for contributing to her death nearly two years later.

"She didn't know who to trust and in the end, when she died two years later, she was without any form of real protection," he said.

Retired senior judge John Dyson's report said Bashir commissioned faked bank statements that falsely suggested some of Diana's closest aides were being paid by the security services to keep tabs on her.

Bashir then showed them to Spencer in a successful bid to convince him to arrange a meeting between himself and Diana and earn her trust to secure the sit-down.

"By behaving as described... Mr Bashir acted inappropriately and in serious breach" of the corporation's own editorial guidelines on "straight dealing", Dyson added.

Questions have long been asked about how Bashir convinced Diana to talk on the BBC's flagship "Panorama" programme, which was watched by a record 22.8 million people and won a string of television awards.

In it, she famously said "there were three people" in her marriage — her, Charles and his long-time mistress and now wife, Camilla Parker-Bowles — and also admitted adultery.

Bashir, now 58, was little-known at the time but went on to have a high-profile career on US television networks, and interviewed stars such as Michael Jackson.

He returned to work for the corporation as religion editor until he stepped down just last week, citing ill health, hours before Dyson's report was submitted to BBC bosses.

A 1996 internal inquiry by future BBC chief Tony Hall and another senior figure, Anne Sloman, cleared Bashir of wrong-doing.

But Dyson called that probe "flawed and woefully ineffective".

In particular, it did not ask Spencer for his version of events, Dyson noted, lambasting it for failing to scrutinise Bashir's actions properly.