 Aldo RayMatt Kirk | Matt Kirk |
 Heather SearsAnn Fulton | Ann Fulton |
 Neil McCallumJohnny Kirk | Johnny Kirk |
 Victor MaddernBert | Bert |
 Carlo GiustiniLuke (as Carlo Justini) | Luke (as Carlo Justini) |
 Alan TilvernSuperintendent Hanna | Superintendent Hanna |
 Barbara MullenMrs. Fulton | Mrs. Fulton |
 Gerry DugganPat Fulton | Pat Fulton |
 Kenneth J. WarrenPolice Commissioner (as Kenneth Warren) | Police Commissioner (as Kenneth Warren) |
 Grant TaylorConstable Macey | Constable Macey |
| DDeryck BarnesSergeant Drake (as Derek Barnes) | Sergeant Drake (as Derek Barnes) |
 Richard VernonUnder Secretary | Under Secretary |
| EEwan MacDuffNaval Captain (as Ewan Macduff) | Naval Captain (as Ewan Macduff) |
 Martin BoddeyBrigadier | Brigadier |
| MMax RobertsonMotorcycle Policeman | Motorcycle Policeman |
| JJohn PuseySmall Boy | Small Boy |
| FFred AbbottConstable | Constable |
| PPeter BathurstAttorney General (Uncredited) | Attorney General (Uncredited) |
 Robert RiettiLuke (Uncredited) | Luke (Uncredited) |
| JJames CopelandChief Petty Officer (Uncredited) | Chief Petty Officer (Uncredited) |
 Ed DevereauxTV Newsreader (Uncredited) | TV Newsreader (Uncredited) |
 Barry FosterNavy Rating (Uncredited) | Navy Rating (Uncredited) |
| LLindsay HooperPolice Sergeant (Uncredited) | Police Sergeant (Uncredited) |
 Glyn HoustonNavy Rating (Uncredited) | Navy Rating (Uncredited) |
| HHoward LangWhitsun (Uncredited) | Whitsun (Uncredited) |
| JJerome 'Jock' LevyPoliceman (Uncredited) | Policeman (Uncredited) |
| JJack TaylorSub-editor (Uncredited) | Sub-editor (Uncredited) |
| JJohn WilderSecretary at Meeting (Uncredited) | Secretary at Meeting (Uncredited) |
 George WoodbridgeNewspaper Editor (Uncredited) | Newspaper Editor (Uncredited) |
