It is believed that the Queen has put a “ring of steel” in place to prevent any attempts by Harry and Meghan to include her in the Netflix documentary.
One royal expert believes aides have enacted a strict cordon around the Queen, and have advised Prince Harry and Meghan Markle to not even think about using the monarch as a means of sourcing content for Netflix.
Russell Myers told the US news show Today: “There is an absolutely a ring of steel around the Queen in terms of her advisors.
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"I mean, they certainly would be advising Harry and Megan to not even think about it for a second, but who knows what they will do?
"They would definitely have been advised not to speak to Oprah Winfrey not to speak to Gayle King not to speak to the American journalists last week and yet they still keep on doing it.
"I mean, it makes you wonder how much the family can take anymore and I'm sure Prince William has got his head in his hands as Prince Charles as every time they pop up on the television."
The couple signed a lucrative deal with Netflix in September 2020 with an aim to produce documentary content for the streaming giant.
Harry and Meghan recently saw their Netflix project titled 'Pearl' axed as the company moved to save cash falling subscriber numbers.
Royal commentator Richard Fitzwilliams believes the couple may now come under pressure to quickly "produce more" royal content.
He told Express.co.uk: “Clearly there will be pressure on Harry and Meghan to produce more and probably more quickly."
It comes as a spokesperson for the Sussexes confirmed Prince Harry would be attending the Jubilee celebration with Meghan and their two children, son Archie and daughter Lilibet.
The family was "excited and honoured" to be attending, the spokesperson said in a statement.
There had been question marks over whether Prince Harry, given his dispute with the government over security, would travel to the UK to join other royals in celebrating the Queen's Jubilee.
Prince Harry did miss his grandfather Prince Philip's memorial service in March.
Meanwhile, Harry and Meghan will not be joining other royals as they wave at crowds from the balcony of Buckingham Palace during the Trooping of the Colour ceremony at the start of the celebrations.
The Queen has decided neither her son Prince Andrew nor grandson Prince Harry will be there this time with attendance restricted to working royals only.
"After careful consideration, the Queen has decided this year's traditional Trooping the Colour balcony appearance will be limited to her majesty and those members of the royal family who are currently undertaking official public duties on behalf of the Queen," a palace spokesperson said.
Prince Harry stepped away from royal duties after moving with his American wife Meghan to Los Angeles two years ago.
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