| Person | Type | Job | Role(s) |
|---|---|---|---|
 Benjamin Fisz | Crew | Production | Producer |
Derek Trigg | Crew | Editing | Editor |
Dorothea Bennett | Crew | Writing | Novel |
 Freddie Francis | Crew | Camera | Director of Photography |
Jo Eisinger | Crew | Writing | Screenplay |
John Cameron | Crew | Sound | Music |
Robert Porter | Crew | Production | Co-Producer |
Robin Gregory | Crew | Sound | Sound Recordist |
 Terence Young | Crew | Directing | Director |
Mahmud Sipra | Crew | Production | Executive Producer |
Dennis Hall | Crew | Production | Location Manager |
 Anthony Dawson | Cast | Actor | Vicar |
 Anthony Pullen Shaw | Cast | Actor | Matthews |
 Bill Shine | Cast | Actor | Commissionaire |
 Charles Gray | Cast | Actor | Sir James Chorley |
 David Kelly | Cast | Actor | Cameron |
 Eric Sevareid | Cast | Himself | |
 Jana Shelden | Cast | Actress | Air hostess |
 Jennifer Jayne | Cast | Actress | Nurse |
 John Franklyn-Robbins | Cast | Actor | English doctor |
 Laurence Olivier | Cast | Actor | Adm. Sir Gerald Scaith |
 Maggie Rennie | Cast | Actress | Mrs. Ransom |
 Matthew Scurfield | Cast | Actor | KGB man #1 |
 Maureen Bennett | Cast | Actress | Susan |
 Michael Caine | Cast | Actor | Philip Kimberley / Sergei Kuzminsky |
 Michael Medwin | Cast | Actor | Milroy |
Morteza Kazerouni | Cast | Boris Medvachian | |
Nigel Humphreys | Cast | Actor | Petrol Attendant |
 Owen Brenman | Cast | Actor | Policeman |
P.G. Stephens | Cast | Actor | Scaith's Driver |
 Peter Burton | Cast | Actor | Douglas Ransom |
Robert Austin | Cast | Actor | KGB man #2 |
 Robert Powell | Cast | Actor | Jamie Fraser |
 Sabine Sun | Cast | Actress | Dr. Zilenka |
 Susan George | Cast | Actress | Penelope Kimberley / Annabelle Kimberley |
 Thomas Heathcote | Cast | Actor | Gamekeeper |
 Vladek Sheybal | Cast | Actor | Gen. Zorin |
Patrick Dawson | Cast | Ginger | |
Peter Hutchins | Cast | Actor | Connolly |
 Yuri Borienko | Cast | Actor | Russian trainer |
 Richard Aylen | Cast | Older Kimberley | |
 Guy Standeven | Cast | Actor | Albert, The Club Steward (uncredited) |
Peggy Marshall | Cast | Actress | Polly |
David Allister | Cast | Actor | Sgt. Lloyd |
Maurice Thorogood | Cast | Actor | Policeman |
Richard Borthwick | Cast | Actor | Policeman |
Nuala Barrie | Cast | Lady in Church | |
Ian Masters | Cast | Actor | Special Branch Man |
| Person | Type | Job | Role(s) |
