The platform has now confirmed that Staunton will appear in a sixth season of the show, which will serve as the final bow for the series.
In a statement, series creator Peter Morgan said: “As we started to discuss the storylines for series five, it soon became clear that in order to do justice to the richness and complexity of the story we should go back to the original plan and do six seasons.”
Morgan had always envisioned The Crown running for six seasons, but had announced in January that it would end with season five after it “became clear… that this is the perfect time and place to stop”.
The season, which marks Colman and Bonham Carter’s last appearances on the show, is expected to debut later this year.
It was announced last week (2 July) that Phantom Thread star Lesley Manville will succeed Bonham Carter as Princess Margaret in the show’s final two seasons.
The Crown sees its main cast replaced by new actors every two seasons in accordance with leaps in time. Its first two seasons featured Claire Foy and Vanessa Kirby as Elizabeth and Margaret, respectively.
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