Trailer
 | Lionel Jeffries as Arthur Lee |
 | Avice Landone as Mary Lee |
 | Jack Watling as John Lee |
 | Patricia Owens as Connie Lee |
 | Brian Worth as Michael Collins |
 | Gordon Jackson as Leonard |
 | Arthur Lowe as Wilkins |
 | Cyril Chamberlain as Clarkson |
 | Erik Chitty |
 | Frazer Hines as Boy |
 | Alastair Hunter |
| John Pike as Boy |
 | Peter Swanwick |
| Directing | |
| Henry Cass | Director |
Production | |
| Robert S. Baker | Producer |
Crew | |
| John Gilling | Script |
Camera | |
| Monty Berman | Director of Photography |
Editing | |
| Maurice Rootes | Editor |
Art | |
| John Stoll | Art Direction |
Sound | |
| H.C. Pearson | Sound Recordist |
Production | |
| Monty Berman | Producer |
