Prince Harry is reportedly in talks to make a documentary about his mother Princess Diana ahead of the 30th anniversary of her death

Prince Harry is reportedly in talks to make a documentary about his mother Princess Diana to mark 30 years since her death.

Harry, who recently moved back to the UK with his wife Meghan and kids Archie and Lilibet, is said to have approached several of his mother’s friends and relatives to take part in the new documentary.

According to the Telegraph, the unnamed project is yet to be confirmed, but Harry is reportedly weighing up several ways he can mark his mother’s passing on its milestone 30th anniversary next August.

A source told the publication: “The Duke has discussed a number of possible projects to mark the 30th anniversary of his mother Diana, Princess of Wales's passing.

“Nothing has been finalised or confirmed, and he is still considering the most meaningful way to honour her legacy during this important anniversary year.”

Harry is reportedly in talks to create a new documentary to honour his mother (Aaron Chown / POOL / AFP via Getty Images)

It’s also been reported that the documentary could be made through Harry and Meghan’s Archwell Productions, which has a first-look agreement in place with Netflix.

Harry was just 12-years-old when his mother sadly died in a car crash in Paris in August 1997; while his older brother William was 15.

Among those rumoured to be included in the documentary is Diana’s brother Earl Spencer, who recently made bombshell claims about King Charles’ behaviour following her death.

In his book Swan Song: Diana, My Sister, Spencer alleges that he and the then-prince got into a heated discussion after Charles said he wanted William and Harry to walk behind their mother’s coffin at the funeral.

Spencer said he didn’t think it’s what his sister would have wanted and the pair got into a spat.

He wrote: “Prince Charles continued his stream of anger, without me interrupting. Then he stopped.

“I assumed the pause signalled an effort to bring himself under control, but then he unleashed down the phone what I have always taken to be his pent-up contempt for Diana, and his horror that the world was so bowled over by her death. 'Rest assured,' he hissed, 'we'll forget her soon enough!'”

Harry is said to be thinking of ways to mark the 30th anniversary of his other’s death (Julian Parker/UK Press via Getty Images)

In another explosive claim in the book, Spencer said Charles had sounded ‘giddily elated’ and like ‘a lottery winner’ while talking to him on the phone just days after Diana’s death.

In an unusual move, Buckingham Palace issued a statement refuting the claims in the memoir.

A spokesperson for the Palace said: "While we do not comment on books as a matter of principle, His Majesty is mindful that the pain of fraternal grief can cloud reason, affect judgment and colour memory in ways others do not recognise, even many years after such a loss."

In a recent interview with the BBC, Spencer stood by his book, saying: “I have a duty as an eyewitness to history. I'm aware of mortality and I wanted to just put things down once and for all that were true.

“This is not a threat, it's a fact, I know lots of things about the King which I chose not to include in the book because they were not relevant.”