The five-part series, full of anecdotes and tidbits about the Royal Family, makes revelations about the relationship between King Charles and Queen Camilla while she was married to Andrew Parker Bowles, with whom she had tied the knot in 1973 and had two children.
Charles bought Highgrove in order to be close to Camilla in Wiltshire where she lived with her young family.
But a deep bond between the pair was always there with Nicky Haslam, Camilla’s friend, telling the documentary that “more than anything”, she made him laugh which stayed with him “all through youth”.
He told how their love never faltered, adding: “There was a joined spirit between them which meets somewhere… which makes them both content.”
But the Queen quickly caught wind of their close bond and was reminded of her uncle, Edward VIII, who infamously abdicated in order to marry the “woman he loved”, twice divorced Wallis Simpson.
As a result of his relinquishing the Crown, the Queen’s father, George VI, became King and she suddenly became heir to the throne with her uncle effectively banished to exile in France.
Lady Anne Glenconner, speaking on the second episode entitled Threats, explained that Edward VIII leaving the family meant a lot to the Queen.
The maid of honour at the Queen’s coronation and Princess Margaret’s Lady in Waiting said: “I think that [for] the Queen and Princess Margaret, he was their favourite uncle. He had a magic about him. And that’s I think why it was such a blow that this happened; they just felt he had been stolen.”
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The documentary, produced by David Glover of 72 films, revealed that like Mrs Simpson, Camilla was seen as a threat to both Charles’s and the Monarchy’s future.
The Queen, therefore, sent a warning to both, banning them from all Royal events.
Author and biographer Andrew Morton, writing in his 2022 book The Queen, explained that the late Monarch “put out the word” that Mrs Parker Bowles was not to be invited to Royal events.
He wrote: “That included Charles’s 30th birthday party at Buckingham Palace in 1978. The Queen Mother followed suit.”
Mr Morton added: “Camilla had, in effect, been ‘cancelled’ by the highest in the land, and there was nothing her Royal lover could do about it.”
The Queen never directly confronted Camilla as that would have been “totally out of character” for her, he explained.
Over the years and after Charles and Princess Diana’s marriage broke down, the Monarch warmed up to Camilla and eventually allowed the pair to tie the knot in 2005 with three of her children, Charles included, going through divorces themselves.
All episodes of The Real Crown: Inside the House of Windsor are available to stream on itvX here.