Question: who plays elizabeth's grandmother in the crown
Answer: Eileen Atkins as Queen Mary , Elizabeth 's grandmother ( season 1 ) Jeremy Northam as Anthony Eden , Churchill 's Foreign Secretary , who succeeds him as Prime Minister Victoria Hamilton as Queen Elizabeth , George VI 's wife and Elizabeth 's mother , known as Queen Elizabeth The Queen Mother during her daughter 's reign Ben Miles as Group Captain Peter Townsend , George VI 's equerry , who hopes to marry Princess Margaret Greg Wise as Louis Mountbatten , 1st Earl Mountbatten of Burma , Philip 's ambitious uncle and grea