Trailer
Images
 | Simon Pegg as Neil |
 | Kate Beckinsale as Catherine |
 | Sanjeev Bhaskar as Ray |
 | Rob Riggle as Grant |
 | Robert Bathurst as James Cleverill |
 | Suzy Eddie Izzard as Headmaster |
 | Joanna Lumley as Fenella |
 | Marianne Oldham as Rosie |
 | Emma Pierson as Miss Pringle |
 | Meera Syal as Fiona |
 | Mojo as Dennis the Dog |
 | Robin Williams as Dennis the Dog (voice) |
 | John Cleese as Chief Alien (voice) |
 | Terry Gilliam as Nasty Alien (voice) |
 | Eric Idle as Salubrious Gat (voice) |
 | Terry Jones as Scientist Alien (voice) / Van Driver |
 | Michael Palin as Kindly Alien (voice) |
| James David Robinson as Steve |
 | Judy Loe as Canteen Lady |
 | Alexa Davies as Sandwich Girl |
| Ellie Green as Lavender |
 | Professor Brian Cox as Self |
 | James Kermack as Policeman |
 | Brenda Emmanus as Reporter |
 | Neville Phillips as Author |
| Edward Fisher as Mr. Eriksson |
| Simon Coleman as Police Inspector |
 | Ronan Summers as Security Man |
 | David Annen as Newsreader |
 | Mairi McHaffie as Newsreader |
 | Gavin Scott as Newsreader |
| Richard Suchet as Newsreader |
| Christopher Chesser as Documentary Voice (voice) |
| Margarita Doyle as Alien Computer Voice (voice) / Señorita Lopez |
 | Jud Charlton as Mortician |
 | Lennon Clarke as Bank Robber |
| John Bedford as Ray Worshiper |
| Marli Bland as Ray Worshiper |
| Basia Forrest as Ray Worshiper |
| Liliana Gane as Ray Worshiper |
| Lorna Lacey as Ray Worshiper |
| Debbie J. Nash as Ray Worshiper |
| Christian Palmer as Ray Worshiper |
| Zara Sorensen as Ray Worshiper |
| Chris Weeks as Ray Worshiper |
| Robert Jones as Pink Policeman |
| Chris Daniels as Pink Policeman |
| Charlie Richards as Pink Policeman |
| Samuel Timlett as Baby |
 | Lasco Atkins as Party Guest (uncredited) |
| Hannah Blamires as Photographer (uncredited) |
| Stuart Budd as Passerby (uncredited) |
 | Marat Khairoullin as Zombie (uncredited) |
 | Jorge Leon as Celebrity (uncredited) |
| Tremayne Miller as Book Launch Guest (uncredited) |
 | Lockhart Ogilvie as Ray Worshiper (uncredited) |
 | Tony Pankhurst as Father (uncredited) |
 | Alan Yentob as Man at Party (uncredited) |
| Directing | |
| Terry Jones | Director |
Writing | |
| Gavin Scott | Screenplay |
Camera | |
| Peter Hannan | Director of Photography |
Editing | |
| Julian Rodd | Editor |
Production | |
| Irene Lamb | Casting |
Art | |
| James Acheson | Production Design |
Crew | |
| Lucy Cork | Stunt Double |
Art | |
| Naomi Moore | Set Decoration |
Sound | |
| George Fenton | Original Music Composer |
Costume & Make-Up | |
| James Acheson | Costume Design |
Production | |
| Bill Jones | Producer |
| Ben Timlett | Producer |
| Mike Medavoy | Executive Producer |
Costume & Make-Up | |
| Jennifer Bell | Hairstylist |
Visual Effects | |
| Rob Hemmings | Animation Director |
| Martyn Smith | Animation |
| Beranger Maurice | Animation |
| Matt Fidler | Animation |
| Oriol Navarro | Animation |
| John Kay | Animation |
| Sun Xiaoxuan | Animation |
| Dong Yixue | Animation |
| Xie Liyan | Animation |
| Yan Yan | Animation |
| Xu Yueyuan | Animation |
| Du Wenlong | Animation |
| Tan Weijian | Animation |
| Li Jingxin | Animation |
Production | |
| Josie Morgan | Production Assistant |
Writing | |
| Terry Jones | Screenplay |
Art | |
| Harry Pain | Art Direction |
Production | |
| Chris Chesser | Executive Producer |
| Angela Fuguet | Co-Executive Producer |
| Margarita Doyle | Line Producer |
| Jason Garrett | Executive Producer |
| David Rogers | Executive Producer |
| Mark Sandell | Executive Producer |
| Edward Simons | Executive Producer |
| Ken Tuohy | Co-Producer |
