Instead of the label, the term ‘Sussexit’ will be used in the episode which focuses on the “circumstances around the decision of the Sussexes to step down from their senior royal roles”.

The BBC approached Buckingham Palace, Clarence House and Kensington Palace for comment about the series, and they provided the following joint statement: “A free, responsible and open press is of vital importance to a healthy democracy.

“However, too often overblown and unfounded claims from unnamed sources are presented as facts and it is disappointing when anyone, including the BBC, gives them credibility.”