| Directed by |
Roy Boulting John Boulting |
|
| Screenplay by |
Roy Boulting |
|
| Story by |
Paul Dehn James Bernard |
|
| Cast: | ||
| Professor Willingdon | Barry Jones | |
| Superintendent Folland | André Morell | |
| Stephen Lane | Hugh Cross | |
| The Prime Minister | Ronald Adam | |
| Mrs. Willingdon | Marie Ney | |
| Gen. Willoughby | Martin Boddey | |
| Alf | Geoffrey Keen | |
| Station Policeman | Joss Ackland | |
| Mother at Train Station | Jean Anderson | |
| Barber | Ernest Clark | |
| Bit Part | Rupert Davies | |
| Soldier | Laurence Harvey | |
| Bit Part | Walter Horsbrugh | |
| Soldier in House Search | Sam Kydd | |
| Bit Part | Patrick Macnee | |
| Woman in Phone Box | Marianne Stone | |
| Director of photography |
Gilbert Taylor |
|
| Produced by |
John Boulting Roy Boulting |
|
| Music composed by |
John Addison |
|
| Edited by |
Roy Boulting John Boulting |
|
| Year: | 1950 | |
| Running time: | 94 minutes | |
| Country: | United Kingdom | |
| Language: | English | |