Prince Harry’s book Spare was a “mistake” that “considerably worsened” his relationship with brother Prince William, a royal expert has said.
Commentator Richard Fitzwilliams, speaking exclusively to OK!, said there was a “very big rift in the Royal Family” following the publication of the Duke of Sussex’s explosive memoir.
He added The Firm “simply can’t trust” the Sussexes now - as anything said to them could be made public.
Harry’s book brought a fresh round of attacks on the Royal Family when it was released in January - just weeks after the couple’s Netflix documentary had levelled a host of damning accusations against the monarchy.
Among the most explosive allegations in Spare was one claim that William attacked Harry in a row over Meghan Markle, 41.
PR consultant Mr Fitzwilliams, talking about the relationship between William, 40, and Harry, 38, told us: “The problem, obviously, is that there's a very big rift in the Royal Family, it's deeply public.
“As far as we know, there isn't any communication between William and Harry and Meghan, and you can see why, because William is undoubtedly shocked by what was in Spare.
“Also, there's the problem that’s obvious, that anything said to the Sussexes could find its way into the media. You simply can’t trust them.”
Mr Fitzwilliams went on to say reports have indicated there is no communication between William and Harry.
He added: “There's a very deep rift between them and Spare worsened it very considerably.
“There's no doubt at all, that book was a mistake."
OK! has contacted Kensington Palace and the Sussexes for comment.
Harry’s bombshell autobiography became the fastest-selling non-fiction book ever when it was released - with the English language edition selling more than 1.4 million copies on its first day of publication.
As well as attacking Prince William, the book also criticised King Charles, Queen Consort Camilla and Kate Middleton.
In one section of the memoir, Harry claimed that the Prince and Princess of Wales encouraged him to wear his infamous Nazi uniform to a 2005 fancy dress party.
In another, he alleged his father, the King, told his late mother Princess Diana that 'my work is done' after she gave birth to a 'spare' second son.
The damaging claims made in the book - along with those revealed in the Sussexes’ Netflix series - have cast doubt over whether Harry and Meghan will attend the King Charles’ Coronation on 6 May.
The couple announced they have received an invitation to the big day - but they have yet to confirm if they will go.
The Royal Family is said to have drawn up two plans for the the Coronation - depending on whether or not Harry and Meghan attend.
Royal author Tom Bower, meanwhile, previously told OK! that it would be a mistake for the Sussexes to attend the historic event - saying there is “no way back” for the couple following the damaging claims made in Spare and the Netflix series.
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