Gillian Anderson played Britain's first female Prime Minister Margaret Thatcher in season four.
For seasons five and six, Khalid Abdalla is originating the role of Dodi Fayed, Diana's partner who also died in the 1997 Paris car crash.
Ben Daniels joined The Crown in season three to play Princess Margaret's ex husband, Antony Armstrong-Jones.
Matthew Goode became Antony Armstrong-Jones for season two of The Crown.
John Lithgow played one the most famous prime ministers, Winston Churchill, in season one.
The infamous Duke of Windsor made an appearance in seasons one through three, played at different times by Alex Jennings and Derek Jacobi.
In season one, Jared Harris played Queen Elizabeth II's beloved father, King George VI.
Both Greg Wise and Charles Dance portrayed Louis, Earl Mountbatten of Burma.