Meghan Markle and Prince Harry 'could be demoted' despite Charles battling Palace officials to help Sussexes

According to the book by veteran Royal writer Robert Jobson, despite pressure from his aides, King Charles is eager not to antagonise his son.

He is understood to "not to be in favour" of axing Harry and Meghan's titles due to his "enduring love" for his youngest son.

However, in "Our King: Charles III" the author warns that despite the monarch's best efforts, the monarch may be left with no choice but to act if the pair continue to criticise the Royal Family.

The author wrote: "The idea of stripping Harry of his Duke of Sussex title has been discussed at the highest level.

"The King is said not to be in favour, but other senior Royals are less indulgent.

"Ultimately, despite Charles's enduring love for his son, he will come under increasing pressure if Harry continues to attack the monarchy.

"At that point, the King would have two options: put up with the spreading stain on his reign, or take action to limit its scope.

"In short, Harry and Meghan could yet find themselves demoted to Mr and Mrs Mountbatten-Windsor of Montecito, California."

Keen to keep the Sussexes a part of the family, the King has invited the pair to his Coronation next month.

But with less than four weeks to go, Buckingham Palace remain unsure if they plan to attend.

Despite guests being asked to RSVP by the start of last week, Harry and Meghan have kept quiet on their intentions.

Jobson writes in his book that King is upset by the continued divisions between the Sussexes and the rest of the Royal Family but is becoming increasingly pessimistic about the chances of reconciliation.

"The fact is that Charles is deeply saddened by the widening gulf between him and his youngest son," he wrote.

"Without doubt, Harry's stream of complaints have threatened to upset the harmony of the new reign. Each TV interview to promote his autobiography has made the chances of healing the rift with his father seem less likely."