John Nesbitt

Narrator (voice)

Roger Moore

Man Examining Film Strip (uncredited)

Emmett Vogan

Lab Assistant (uncredited)

Franz Ferdinand von Österreich-Este

Self (archive footage)

Winston Churchill

Self (archive footage)

King Edward VIII of the United Kingdom

Self (archive footage)

Kaiser Wilhelm II of Germany

Self (archive footage)

William McKinley

Self (archive footage)

Theodore Roosevelt

Self (archive footage)

William Howard Taft

Self (archive footage)

King Manoel II

Self (archive footage)

King George VI of the United Kingdom

Self (archive footage)

King George V of the United Kingdom

Self (archive footage)

King Alfonso XIII of Spain

Self (archive footage)

King Albert I of Belgium

Self (archive footage)