Prince William will strike back at Harry and Meghan if they make false allegations against the Royal Family, a source has said.
Netflix's £88 million docusseries is set to release on December 8 and is rumoured to contain a number of serious claims against The Firm.
Senior aides have been asked to watch the six-part show closely and hit back with firm responses to anything they deem inaccurate.
In addition, sources say that Prince William himself is growing tired of the long-standing royal mantra of "never complain, never explain" and will personally urge Harry to "back off" if material contained in the series is thought false or misleading.
Palace officials are reportedly set to mount a briefing war and issue a swift rebuttal to any dubious claims made in the new show.
A well-placed source told the Express: "The Prince and Princesses’ team will wait to see what’s in the Netflix series before deciding what to do, but you can see the direction of travel.”
Harry and Meghan have been accused of trying to torpedo William and Kate's high-profile trip to the US by releasing a one-minute-long teaser trailer for the documentary to coincide with their meetings with senior politicians and hosting William's Earthshot award ceremony in Boston.
Many called the event William's "superbowl moment" and a chance to ingratiate himself to the American public.
The decision to release the trailer was described by a source as a "declaration of war".
And on Saturday many felt Harry stole the limelight again when a charity video of him dressed as Spider-Man was released and went viral.
Prince William’s new hardline approach was evident last week in the speed with which his office acted following allegations of racism by lady-in-waiting and his own godmother, Baroness Susan Hussey.
"Racism has no place in our society," Kensington Palace said in response to Lady Hussey's remarks made at a royal reception. "These comments were unacceptable, and it's right that the individual has stepped aside with immediate effect."
The Sussexes caused a huge uproar with their infamous Oprah interview in March last year, which included allegations of racism within the Royal Family.
The Royals took two days to respond, with the late Queen issuing an unprecedented statement expressing her love for Harry and Meghan and noting that “recollections may vary”.
Meanwhile, palace insiders have reportedly started nicknaming Harry and Meghan 'the Kardashians' as the family brace themselves for more allegations of racism in the pair's new Netflix documentary.
Netflix released the dramatic trailer for 'Harry and Meghan' on December 1, in which Harry declares that he has to "protect his family" and Meghan asks "when the stakes were this high, doesn’t it make more sense to hear our story from us?”.
The teaser has already garnered more than 4.5 million views and is set to become a big hit on the streaming platform as speculation about the inner workings of the family reaches fever pitch.
A senior source said that, in private, King Charles and his family have made "numerous attempts to privately make peace with the Duke and Duchess of Sussex, which sadly have once again resulted in the other side wishing to air their repeated grievances to the world".
They added that a royal response to any allegations made in the documentary "will be swift and robust".
