Gina McKee
— Wallis Simpson
Emma Davies
— Elizabeth, Queen Mother
Nick Waring
— Edward VIII
John Sackville
— George VI
Emma Campbell-Jones
— Thelma Furness
Richard Harrington
— Narrator
David Summer
— Alexander
Lady Colin Campbell
— Self
Andrew Morton
— Self
Anna Sebba
— Self
Adolf Hitler
— Self (archive footage)
Elizabeth II of the United Kingdom
— Self
Queen Elizabeth the Queen Mother
— Self (archive footage)
King George VI of the United Kingdom
— Self (archive footage)
Wallis Simpson
— Self (archive footage)