The quiet village of Bramley End is taken over by German troops posing as Royal Engineers. Their task is to disrupt England's radar network in preparation for a full scale German invasion. Once the villagers discover the true identity of the troops, they do whatever they can to thwart the Nazis plans.
| Writing | Angus MacPhail | Screenplay |
| Production | Hal Mason | Production Manager |
| Art | Tom Morahan | Art Direction |
| Writing | Diana Morgan | Screenplay |
| Production | John Croydon | Production Supervisor |
| Camera | G. Gibbs | Camera Operator |
| Directing | Alberto Cavalcanti | Director |
| Production | Michael Balcon | Producer |
| Editing | Sidney Cole | Editor |
| Writing | John Dighton | Screenplay |
| Crew | Roy Kellino | Special Effects |
| Camera | Wilkie Cooper | Director of Photography |
| Sound | William Walton | Original Music Composer |
| Sound | Eric Williams | Sound Supervisor |
| Production | S.C. Balcon | Associate Producer |
| Sound | Len Page | Sound Recordist |
| Camera | Hal Britten | Assistant Camera |
| Writing | Graham Greene | Original Story |
| Writing | John Dighton | Story |
| Writing | Diana Morgan | Story |
| Writing | Angus MacPhail | Story |
| Sound | Ernest Irving | Music Director |
| Camera | Douglas Slocombe | Additional Camera |
