Based on the award-winning play, “The Audience,” the series reunites creator/writer Peter Morgan (The Queen, Frost/Nixon) with director Stephen Daldry (Billy Elliot, The Hours) and producer Andy Harries (The Queen).
“I could not be happier to be playing Princess Margaret,” Manville said in statement.
The series tells the inside story of Queen Elizabeth II’s reign, as the fragile social order established after the Second World War breaks apart.
Gillian Anderson will play Margaret Thatcher with Emerald Fennell portraying Camilla Parker Bowles.