A young Princess Elizabeth marries Prince Phillip. As King George VI's health worsens, Winston Churchill is elected prime minister for the second time.
- Claire Foy as Queen Elizabeth II
- Matt Smith as Philip, Duke of Edinburgh
- Vanessa Kirby as Princess Margaret
- John Lithgow as Winston Churchill
- Jared Harris as King George VI
- Ben Miles as Peter Townsend
- Eileen Atkins as Queen Mary
- Victoria Hamilton as Queen Elizabeth, The Queen Mother
- Jeremy Northam as Anthony Eden
- Harriet Walter as Clementine Churchill
- Greg Wise as Lord Louis Mountbatten
- Elizabeth and Phillip honeymoon in Malta
- King George's lung is removed, but his lung cancer is hidden from him and the family.