The Crown S4. Picture shows: Camilla Parker Bowles (EMERALD FENNELL). Filming Location: Australia House, Aldwych — The Crown S4. Picture shows: Camilla Parker Bowles (Emerald Fennell). Filming Location: Australia House, Aldwych

Picture shows: Dennis Thatcher (STEPHEN BOXER) and Margaret Thatcher (GILLIAN ANDERSON) — Picture shows: Dennis Thatcher (Stephen Boxer) and Margaret Thatcher (Gillian Anderson)

Netflix's popular royal drama has explored many hidden intricacies of the British royal family over three series so far, providing an engrossing portrait of the 20th-century monarchy. Series three took viewers up to the year 1977, with the fourth series – which arrives on Netflix on 15 November – likely to pick up in the late 1970s.

Upcoming plot lines are expected to include Charles's and Diana's relationship; tensions between the Queen and Margaret Thatcher, as the latter leads the country into the Falklands War; and the death of Lord Mountbatten at the hands of the IRA.

What can we expect from series 4 of The Crown? Plus a recap of series 1–3

The series also stars Olivia Colman as Queen Elizabeth II; Helena Bonham Carter as Princess Margaret; Tobias Menzies as Prince Philip; Erin Doherty as Princess Anne; and Marion Bailey as the Queen Mother.