In the period drama's second season, the story will move onto the second half of the 1950s, covering everything from the Suez Crisis in 1956 to the retirement of Harold Macmillan in 1963.
Speaking to someone off camera, she is seen defiantly stating: 'I know who I am, a woman for the modern age.
Yet the monarchy continues its pre-war routine as if nothing's changed.
He says: 'Who's done more damage to the monarchy? It's still not known who will take on the role of the middle-aged Margaret - only Elizabeth has been re-cast, with Olivia Colman in the role.