 | Robin Clarke als Mark |
 | Jennifer Ashley als Holly |
 | Stephanie Beacham als Kate |
 | Steven Grives als Gary |
 | Barrie Houghton als Karl |
 | Rosalind Lloyd als Gail |
 | Victoria Tennant als Barbra |
 | Trevor Thomas als Mitch |
 | Heather Wright als Sharon |
 | David Baxt als Ricky |
 | Dominic Jephcott als Dean |
| John Segal als Jeff |
 | Robert Pugh als Roy |
 | Judy Geeson als Sandy |
| Nick Maley als Alien Babies |
| Kevin O'Shea als Corin |
| Gloria Maley | Screenplay |
| Norman J. Warren | Director |
| Nick Maley | Screenplay |
| John Metcalfe | Director of Photography |
| John Metcalfe | Music |
| Richard Gordon | Producer |
| Rose Tobias Shaw | Casting |
| David Speechley | Producer |
| Peter M. Schlesinger | Executive Producer |
| Peter Brayham | Stunt Coordinator |
| Philip Sharpe | Special Effects |
| Jim Elderton | Sound Editor |
| Simon Okin | Sound Recordist |
| Gary White | First Assistant Director |
| Nick Maley | Special Effects Makeup Artist |
| Hayden Pearce | Production Design |
| Peter Boyle | Editor |
| John Scott | Original Music Composer |
| Nick Maley | Makeup Supervisor |
| Dick Pope | Camera Operator |
| Lorraine Goodman | Production Assistant |
| Ian Watson | Assistant Art Director |
| Sheila Thomas | Key Makeup Artist |
| Alison Thorne | Continuity |
| Chris Blunden | Assistant Editor |
| Adrian Rawle | Second Assistant Director |
| Alan Board | Construction Manager |
| Brian Wells | Property Master |
| Dennis Lewis | Grip |
| Brian Winterborn | Property Buyer |
| Derek Harrington | Third Assistant Director |
| George Boner | Gaffer |
| Barry Peake | Still Photographer |
| Patrick Isherwood | Production Accountant |
| Hayden Pearce | Production Designer |
| Rose Tobias Shaw | Casting Director |
| Ross Carver | Hairdresser |
| Paul Botham | Boom Operator |
| John Simmons | Focus Puller |
| Derry Haws | Assistant Makeup Artist |
| Mike Metcalfe | Clapper Loader |
| Chris Reed | Assistant Sound Editor |
