Wartime tale of a group of British scientists efforts to develop the first radar system. They did it just in time for it to be used in the Battle of Britain against the might of the Nazi Luftwaffe. Without it the little island could well have been overrun.
| Directing | Peter Ustinov | Director |
| Writing | Peter Ustinov | Writer |
| Production | George H. Brown | Producer |
| Lighting | Norman Foley | Gaffer |
| Camera | Jack Hildyard | Director of Photography |
| Art | Carmen Dillon | Art Direction |
| Production | Filippo Del Giudice | Executive Producer |
| Production | Peter Ustinov | Producer |
| Production | David Cousland | Production Manager |
| Editing | Russell Lloyd | Editor |
| Costume & Make-Up | Vivienne Walker | Hairstylist |
| Costume & Make-Up | Tony Sforzini | Makeup Artist |
| Sound | Alan Rawsthorne | Original Music Composer |
| Sound | Harry Miller | Sound Editor |
| Camera | Gilbert Taylor | Camera Operator |
| Sound | John Cook | Sound Recordist |
| Art | Paul Sheriff | Supervising Art Director |
| Sound | Muir Mathieson | Music Director |
| Directing | Michael Anderson | Assistant Director |
| Sound | Desmond Dew | Sound Recordist |
