Trailer
 | Karen Meagher as Ruth Beckett |
 | Reece Dinsdale as Jimmy Kemp |
 | David Brierly as Mr. Kemp |
 | Rita May as Mrs. Kemp |
 | Nicholas Lane as Michael Kemp |
 | Jane Hazlegrove as Alison Kemp |
 | Henry Moxon as Mr Beckett |
| June Broughton as Mrs Beckett |
| Sylvia Stoker as Granny Beckett |
| Harry Beety as Clive Sutton |
| Ruth Holden as Marjorie Sutton |
| Ashley Barker as Bob |
 | Michael O'Hagan as Chief Supt. Hirst |
 | Phil Rose as Medical Officer |
 | Steve Halliwell as Information Officer |
 | Brian Grellis as Accommodation Officer |
| Peter Faulkner as Transport Officer |
| Anthony Collin as Food Officer |
| Michael Ely as Scientific Officer |
| Sharon Baylis as Manpower Officer |
| David Stutt as Works Officer |
| Phil Askham as Mr Stothard |
| Anna Seymour as Mrs Stothard |
| Fiona Rook as Carol Stothard |
| Christine Buckley as Woman in Supermarket |
| Joe Belcher as Shopkeeper |
| David Major as Boy in Supermarket |
| Maggie Ford as Peace Speaker |
| Mike Kay as Trade Unionist |
| Richard Albrecht as Officer at Food Depot |
| Ted Beyer as Policeman |
 | Dean Williamson as Policeman |
| Joe Holmes as Mr Langley |
| Andy Fenn-Rodgers as Patrol Officer |
| Graham Hill as Soldier |
| Nigel Collins as Soldier |
| Jerry Ready as Looter |
| Dennis Conlon as Looter |
| Greta Dunn as Woman at Hospital |
 | Nat Jackley as Old Man at Graveyard |
| John Livesey as Street Trader |
 | Victoria O'Keefe as Jane |
| Lee Daley as Spike |
| Marcus Lund as Gaz |
| Lesley Judd as Newscaster |
| Colin Ward-Lewis as Newscaster |
 | Paul Vaughan as Narrator (voice) |
| Ingrid P. Frehley as Woman with dead baby (uncredited) |
| Michael Shale as Man who has leg amputated (uncredited) |
| Anne Sellors as Woman who urinates herself (uncredited) |
| Lee Cambell as Dead Boy Under Gate (uncredited) |
| Jonathan Harston as Survivor on the Moors (uncredited) |
 | Patrick Allen as Public Information Film Announcer (voice) (uncredited) |
 | Ed Bishop as US President (voice) (uncredited) |
| Directing | |
| Mick Jackson | Director |
Writing | |
| Barry Hines | Writer |
Production | |
| Mick Jackson | Producer |
Camera | |
| Andrew Dunn | Director of Photography |
| Paul Morris | Director of Photography |
Editing | |
| Donna Bickerstaff | Editor |
| Jim Latham | Editor |
Costume & Make-Up | |
| Sally Nieper | Costume Design |
Art | |
| Christopher Robilliard | Production Design |
Production | |
| Graham Massey | Executive Producer |
| John Purdie | Executive Producer |
| Peter Wolfes | Associate Producer |
Costume & Make-Up | |
| Jan Nethercot | Makeup Designer |
Sound | |
| Graham Ross | Sound Recordist |
Crew | |
| Peter Kersey | Special Effects |
Visual Effects | |
| Peter Wragg | Visual Effects |
Crew | |
| Dorothy Ford | Stunts |
Costume & Make-Up | |
| Gilly Martin | Costume Supervisor |
Production | |
| Matthew Kuipers | Production Manager |
| Jacinta Peel | Production Manager |
Art | |
| Andy Coward | Graphic Designer |
Sound | |
| Fraser Barber | Boom Operator |
Visual Effects | |
| Graham Brown | Visual Effects |
Camera | |
| Dion M. Casey | Camera Trainee |
Crew | |
| Robert Jay Lifton | Scientific Consultant |
| Joseph Rotblat | Scientific Consultant |
| Carl Sagan | Scientific Consultant |
