Royal Biographer Angela Levin claims that Prince Andrew and Sarah Ferguson once infuriated the Royal Family after organising a party "without permission".
The Duke and Duchess of York reportedly planned a sixth birthday party for the daughter of David and Victoria Beckham, Harper, in 2017.
The Royal Family and the Beckhams have had a close friendship over the years, with David Beckham reaffirming his bond with King Charles after being appointed an ambassador for the King's Foundation.
Speaking to GB News, biographer Levin said Andrew and Sarah had tried to organise a birthday party for the then six-year-old at Buckingham Palace.
Angela Levin revealed how Prince Andrew and Sarah Ferguson made the Royal Family 'furious'
PA
She explained: "There are claims that actually it was Prince Andrew that Becks was all pally with, and that actually Prince Andrew had organised a birthday party for six-year-old Harper Beckham in Buckingham Palace.
"Fergie did all that without actually asking for permission."
Detailing the reaction to the unplanned party, Levin said the royals were "furious" with Prince Andrew and Sarah.
She told GB News: "The Royal Family were absolutely furious about that. But they just felt they're now not getting on very well, so it was very difficult."
Prince Andrew and Sarah Ferguson attempted to throw a birthday party for Harper Beckham at Buckingham Palace
PA
Following the incident in 2017, Levin also claimed the Yorks were "not invited" to the wedding of Brooklyn Beckham and Nicola Peltz in 2022.
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Levin told Eamonn and Isabel: "They didn't invite them to Brooklyn and Nicole's wedding either. So that's all I know."
When asked about the "reinvention" of David Beckham and his relationship with King Charles, Levin claimed the star has "turned his attention" to the monarch.
The King has reaffirmed his friendship with the football legend after being announced as the new ambassador for royal charity The King's Foundation.
Detailing their friendship, Levin told Eamonn and Isabel: "King Charles loves him, they've got lots in common now. They both love having bees and making their own honey.
Angela Levin claimed the ex royal couple were 'not invited' to Brooklyn Beckham's wedding
GB News
Praising Beckham's role in the new project and his potential impact on the charity, Levin added: "David's moved very close to Highgrove, where the King lives, so it's very easy to talk about.
"But also he's been looking for somebody who would be help running his charity, the King's Charity. And he's a working man who actually has come up from the bottom and actually done it all himself.
"Beckham would be marvellous at helping these people, doing all that."