John Nesbitt

Narrator (voice)

Roger Moore

Man Examining Film Strip (uncredited)

Emmett Vogan

Lab Assistant (uncredited)

Archduke Franz Ferdinand

Himself (archive footage)

Winston Churchill

Himself (archive footage)

King Edward VIII

Himself (archive footage)

Kaiser Wilhelm II of Germany

Himself (archive footage)

William McKinley

Himself (archive footage)

Theodore Roosevelt

Himself (archive footage)

William Howard Taft

Himself (archive footage)

King Manoel II

Himself (archive footage)

King George VI of the United Kingdom

Himself (archive footage)

King George V of the United Kingdom

Himself (archive footage)

King Alfonso XIII of Spain

Himself (archive footage)

King Albert I

Himself (archive footage)