The Crown creator Peter Morgan decided the show would end after its sixth series because recent history hasn't had the necessary time to "gain a proper perspective".
Fans had been keen to see how the hit Netflix show would deal with recent palace stories including the scandal surrounding Prince Andrew and the controversial decision by Prince Harry and Meghan Markle to step away from royal duties.
But one of the show's executive producers, Suzanna Mackie, has revealed Morgan sees 10 years as the minimum amount of time that needs to have passed before he can tell a story properly.
"Peter has said it very articulately, that he simply can't write something unless there has been time to gain a proper perspective," Mackie told Broadcast.
Watch: Jonny Lee Miller to play John Major in The Crown
She added: "I think he's [Peter] always felt 10 years is the minimum amount of time that he can see something in a historical context, to allow him to really understand it. I don't think he'll deviate from that."
Mackie complimented Morgan for his ability to get beyond the stories everybody knows and "understand the landscape in a more nuanced, complex, surprising way".
The Crown's depiction of history will end in the 2000s, with the Queen's Golden Jubilee year of 2002 a likely conclusion.
Imelda Staunton is set to replace Olivia Colman as Queen Elizabeth II for the final two series, with Sir Jonathan Pryce playing the late Prince Philip, Duke of Edinburgh.
Last year's fourth series of The Crown focused on the 1980s and included the relationship between the Queen and prime minister Margaret Thatcher, as well as the relationship between Prince Charles and Princess Diana.
The run proved to be controversial, with culture secretary Oliver Dowden suggesting the show should come with a disclaimer to make it clear that it's a fictional portrayal of real people.
Watch: Emma Corrin says playing Diana was terrifying