 Kenneth WilliamsAgent Desmond Simpkins | Agent Desmond Simpkins |
 Barbara WindsorAgent Daphne Honeybutt | Agent Daphne Honeybutt |
 Bernard CribbinsAgent Harold Crump | Agent Harold Crump |
 Charles HawtreyAgent Charlie Bind | Agent Charlie Bind |
 Eric BarkerThe Chief | The Chief |
| DDilys LayeLila | Lila |
 Jim DaleAgent Carstairs | Agent Carstairs |
 Richard WattisCobley | Cobley |
 Eric PohlmannEmile Fauzak, the "Fat Man" | Emile Fauzak, the "Fat Man" |
 Victor MaddernMilchmann | Milchmann |
 Judith FurseDr. Crow | Dr. Crow |
 John BluthalHead Waiter / Dr. Crow (voice) | Head Waiter / Dr. Crow (voice) |
 Renée HoustonFunhouse Madame | Funhouse Madame |
| JJack TaylorThug | Thug |
 Tom CleggFunhouse Doorman | Funhouse Doorman |
| BBill CummingsThug | Thug |
 Gertan KlauberCode Clerk | Code Clerk |
 Frank ForsythProfessor Stark | Professor Stark |
 Norman MitchellNative Policeman / Algerian Gent | Native Policeman / Algerian Gent |
 Anthony BairdGuard | Guard |
| DDerek SydneyAlgerian Gent | Algerian Gent |
| PPatrick DurkinGuard | Guard |
 Jill Mai MeredithCigarette Girl | Cigarette Girl |
| HHugh FutcherBed-of-Nails Native | Bed-of-Nails Native |
| AAngela EllisonCloakroom Girl | Cloakroom Girl |
| JJohn AdamsGate Security (uncredited) | Gate Security (uncredited) |
| JJack ArrowThug (uncredited) | Thug (uncredited) |
| GGloria BestFunhouse Girl (uncredited) | Funhouse Girl (uncredited) |
| PPauline ChamberlainTrain Passenger (uncredited) | Train Passenger (uncredited) |
| MMarian CollinsAmazon Guard (uncredited) | Amazon Guard (uncredited) |
