Peter Morgan Creator, Executive Producer Imelda Staunton Queen Elizabeth II Actor Jonathan Pryce Prince Philip, Duke of Edinburgh Actor Lesley Manville Princess Margaret, Countess of Snowdon Actor Dominic West Prince Charles Actor Elizabeth Debicki Diana, Princess of Wales Actor Claudia Harrison Princess Anne Actor Olivia Williams Camilla Parker Bowles Actor Bertie Carvel Tony Blair Actor Salim Dau Mohamed Al Fayed Actor Khalid Abdalla Dodi Fayed Actor Rufas Kampa Young Prince William Actor Fflyn Edwards Young Prince Harry Actor Ed McVey Prince William Actor Luther Ford Prince Harry Actor Meg Bellamy Kate Middleton Actor Sebastian Blunt Prince Edward Actor James Murray Prince Andrew Actor Jonny Lee Miller John Major, Prime Minister Actor Flora Montgomery Norma Major Actor Ed Sayer Equerry Actor Marcia Warren Queen Elizabeth The Queen Mother Actor Andrew Havill Robert Fellowes Actor Emerald Fennell Camilla Shand Actor Stephen Boxer Denis Thatcher Actor Olivia Colman Queen Elizabeth II Actor Tobias Menzies Prince Phillip Actor Josh O'Connor Prince Charles Actor Helena Bonham Carter Princess Margaret Actor Emma Corrin Young Lady Diana Spencer Actor Erin Doherty Princess Anne Actor Gillian Anderson Prime Minister Margaret Thatcher Actor Charles Edwards Martin Charteris Actor David Rintoul Michael Adeane Actor Sam Phillips Equerry Actor Charles Dance Lord Mountbatten Actor Jason Watkins Harold Wilson Actor Ben Daniels Tony Armstrong-Jones Actor Marion Bailey The Queen Mother Actor Victoria Hamilton The Queen Mother Actor Jared Harris King George VI Actor Eileen Atkins Queen Mary Actor Anton Lesser Prime Minister Harold Macmillan Actor Claire Foy Queen Elizabeth II Actor Matt Smith Prince Phillip Actor Vanessa Kirby Princess Margaret Actor John Lithgow Sir Winston Churchill Actor Suzanne Mackie Executive Producer Andy Harries Executive Producer Stephen Daldry Executive Producer Matthew Byam-Shaw Executive Producer Robert Fox Executive Producer