Cast
| Tommy Cannon | Sergeant Cannon |
| Bobby Ball | P.C. Ball |
| Suzanne Danielle | Kim |
| Roy Kinnear | Lloyd |
| Eric Sykes | Chief Constable |
| Jack Douglas | Chief Superintendent |
| Edward Judd | Hilling |
| Jon Pertwee | Coast Guard |
| Arthur English | Man on Motorbike |
| Billy Burden | Herdsman |
| Nigel Lambert | Estate Agent |
| John D. Collins | Customs Officer |
| Ken Barker | Chief Superintendent’s Driver |
| Eric Francis | Fred the Postman |
| Richard Borthwick | Customs Officer |
| Su Douglas | Hilling’s Secretary |
| Laurence Harrington | Police Radio Operator |
| Richard Hunter | High Street Policeman |
| Peter Rutherford | Heavy Man |
| Rosemary Williams | W.P.C. Radio Operator |
| Tommy Wright | Fisherman |
Production
| Director | Val Guest |
| Assistant Directors | Tony Hopkins, Frazer Copp and Peter Wisdon |
| Writers | Sid Colin and Val Guest |
| Additional Material | Sid Green |
| Based on a book by | Sidney Gilliat |
| Producer | Greg Smith |
| Executive Producers |
Laurie Mansfield and Stuart Littlewood |
| Associate Producer | Roy Goddard |
|
Screenplay |
Val Guest |
Crew
| Director of Photography | Jack Atcheler |
| Camera Operator | Brian Elvin |
| Camera Focus | Miki Thomas |
| Gaffer | Steve Birtles |
| Camera Grip | Peter Wood |
| Stills | Joe Pearce |
| Labs | Rank Film Laboratories Ltd |
| Cameras and Lighting Equipment | Samuelsons Film Services Ltd |
| Editor | Peter Weatherley |
| Assistant Editor | Andy Stears |
| Music | Ed Welch |
| Song | Geoff Gill, Bobby Brill, Pete Tyrell |
| Sound Recordist | Laurie Clarkson |
| Sound Mixer | Ken Scrivener |
| Boom Operator | John Stevenson |
| Sound Editor | Mike Hopkins |
| Assistant Sound Editor | Geoff R. Brown |
| Re-Recorded | Anvil Studio, Denham |
| Make Up Supervisor | Stella Morris |
| Hair Supervisor | Daphne Martin |
| Wardrobe Supervisor | Joyce Stoneman |
| Stunt Coordinator | Ken Shepherd |
| Casting Director | Valerie Van Ost |
| Art Director | Geoffrey Tozer |
| Set Dresser | Denise Exshaw |
| Production Buyer | Percy Godbold |
| Property Master | Doug Purdy |
| Construction Manager | Bob Cross |
| Continuity | Josie Fulford |
| Production Accountant | Dianne Twiddy |
| Assistant to Accountant | Sylvia Ellwood |
| Production Assistant | Marlene Butland |
| Producer’s Assistant | Gail Glutters |
| Publicity Director | Derek Robbins |
| PR Consultants | Dennis Davidson Associates |
| Unit Transport | Peter Glazier, Brian Estabrook, Roy Werllerns |
| Location Manager | John Downes |
| Technical Advisor | Bob Holliday |
| Titles | National Screen |
| Studio | EMI Studios Elstree |