Karen Meagher Ruth Beckett Reece Dinsdale Jimmy Kemp David Brierly Mr. Kemp Rita May Mrs. Kemp Jane Hazlegrove Alison Kemp Michael O'Hagan Chief Supt. Hirst Steve Halliwell Information Officer Patrick Allen Public Information Film Announcer (voice) (uncredited) Ed Bishop US President (voice) (uncredited) Karen Meagher Ruth Beckett Reece Dinsdale Jimmy Kemp David Brierly Mr. Kemp Rita May Mrs. Kemp Jane Hazlegrove Alison Kemp Michael O'Hagan Chief Supt. Hirst Steve Halliwell Information Officer Patrick Allen Public Information Film Announcer (voice) (uncredited) Ed Bishop US President (voice) (uncredited)