The Duke and Duchess of Sussex plunged the monarchy into crisis this year when they shared their shocking reasons for quitting their roles as senior roles during their Oprah interview in March. Harry spoke about feeling "trapped" as a royal, while Meghan claimed she did not receive help when she felt suicidal. Harry went on to lambast his father Charles in further interviews, saying he wanted to "break the cycle" of royal parenting. SEE MORE UPDATES HERE.

       Now royal expert Richard Fitzwilliams has shared his concern that the Duke could be “totally unpredictable” with his upcoming memoir and use it as “leverage” against the royals.

       He told The Sun Online: “Its mere existence is a form of a lever to potentially use against the royal family in whatever is to come.

       "This book has the potential to be dynamite.

       "But the thing is, what do the Sussexes really want from the royal family next? What do they want them to do?

       “They have gone rogue. It is a fact.

       "It’s incredibly worrying because they are so totally unpredictable. Anything is possible.”

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       8.48am update: 'William will come out of it worst' Royal biographer on how Harry is making William pay

       Royal Family biographer Ingrid Seward has warned that Prince Harry will try to make his brother Prince William pay in his tell-all memoir. Speaking to GB News, Ms Seward feared that William will "come out of it the worst of all".

       Ms Seward said: "William is the one who will come out of this the worst of all.

       8.22am update: Queen has 'more insulting' plan for Meghan and Harry instead of removing their titles

       Since stepping down as senior royals, Meghan and Harry can no longer carry out royal engagements and also lost their military and royal patronages. They also can't use the word "royal" in their branding while they carve out a new brand for themselves in the US.

       However, the couple still have their Duke and Duchess of Sussex titles, with Harry still keeping his Prince title too.

       Despite this, they have sparked outrage among royal fans for still making money off the royal name by repeatedly bashing the monarchy in their recent interviews, prompting calls for the Queen to remove their remaining titles.

       But royal expert Ingrid Seward believes her Majesty would rather "ignore them" than give them more "ammunition to criticise the monarchy".

       She told Express.co.uk: "I don’t think removing the titles would make much difference and it would look very petty.

       "I also don’t think it is something the Queen would want to do at this stage of her reign.