 Alec GuinnessFlight Lt. Peter Ross | Flight Lt. Peter Ross |
 Jack HawkinsAir CO Frank | Air CO Frank |
 Muriel PavlowMaria Gonzar | Maria Gonzar |
 Anthony SteelJohn Bartlett | John Bartlett |
 Renée AshersonJoan Rivers | Joan Rivers |
 Flora RobsonMelita Gonzar | Melita Gonzar |
 Hugh BurdenEden | Eden |
 Nigel StockGiuseppe Gonzar | Giuseppe Gonzar |
 Stuart BurgePaolo Gonzar | Paolo Gonzar |
 Rosalie CrutchleyCarmella Gonzar | Carmella Gonzar |
 Reginald TateVice Adm. Payne | Vice Adm. Payne |
 Ralph TrumanVice Adm Willie Banks | Vice Adm Willie Banks |
 Gordon JacksonBritish Soldier | British Soldier |
 Ronald AdamOperations Room Controller | Operations Room Controller |
 Peter BarkworthCypher Clerk | Cypher Clerk |
 Ivor BarnardOld Man | Old Man |
 Peter BullFlying Officer | Flying Officer |
 Michael CraigBritish Officer | British Officer |
 Maurice DenhamBritish Officer | British Officer |
 Jerry DesmondeGeneral | General |
 Thomas HeathcoteRadar Operator | Radar Operator |
 Geoffrey KeenSergeant Major | Sergeant Major |
| DDermot KellyBritish Soldier at Airport | British Soldier at Airport |
 Sam KyddArmy Airfield Soldier | Army Airfield Soldier |
 Victor MaddernArmy Airfield Soldier | Army Airfield Soldier |
 Michael MedwinRamsey | Ramsey |
 Lee PattersonOfficer on Truck | Officer on Truck |
 William RussellOfficer at Prison | Officer at Prison |
| HHarold SiddonsMatthews | Matthews |
 Noel WillmanHobley | Hobley |
