Despite recent signs of improving relations between Prince Harry and his father, King Charles, including a birthday video call from Prince Archie and Princess Lilibet, the release of Omid Scobie’s book, Endgame, has halted any progress.

The book includes claims of two alleged “racist royals”, which the Express has not named.

“William is completely adamant that they [the Sussexes] shouldn’t be welcomed back, while the King thinks it would help stop the media circus surrounding the family,” the source added.

“William doesn’t think the Sussexes have much more ammunition and they’ve already played their best cards.”

“Charles is the only senior member of the family who is holding out any hope of a reconciliation, but that has more to do with Harry being his son than anything else.”

A source revealed last week that a follow-up phone call was due between King Charles and Prince Harry after the 75th birthday video message.

However, it seems this hasn’t happened yet. “There has been no conversation, it’s radio silence,” the source claimed.

Prince Harry’s legal team is also challenging the Home Office in the High Court this week over his security protection when he visits the UK.

The Duke wants to reverse a decision to downgrade his security status after he stepped down as a working Royal in 2020 and moved to the United States.

“The Royal Family have had more than enough of this very public tantrum,” said the source.

“If it’s not books and TV appearances, it’s court appearances and stories appearing in the press. There’s not much more left to say and it’s no surprise that the family are keeping them [the Sussexes] at arm’s length. They can’t be trusted.”

The source concluded that it wasn’t just a lack of trust that has led the Royal Family to keep the Sussexes at a distance, but also a fear that the couple’s unpopularity with the British public could rub off on them.

“Senior royals are more than aware that Harry and Meghan’s popularity has nose-dived since Megxit and are concerned that letting them back into the fold could prove catastrophic for the family.

“They don’t want to be part of being booed at public events and they certainly don’t want to be seen as weak for allowing them back in after everything they’ve done.”

An AI tool was used to add an extra layer to the editing process for this story.