Neil Clarke
Simon Pegg
Catherine
Kate Beckinsale
Fiona
Meera Syal
Miss Pringle
Emma Pierson
Newsreader
David Annen
Mairi McHaffie
Gavin Scott
Dennis the Dog (voice)
Robin Williams
Chief Alien (voice)
John Cleese
Nasty Alien (voice)
Terry Gilliam
Salubrious Gat (voice)
Eric Idle
Scientist Alien (voice) / Van Driver
Terry Jones
Grant
Rob Riggle
Kindly Alien (voice)
Michael Palin
Sandwich Girl
Alexa Davies
Author
Neville Phillips
Security Man
Ronan Summers
Mortician
Jud Charlton
Policeman
James Kermack
Ray
Sanjeev Bhaskar
Fenella
Joanna Lumley
Rosie
Marianne Oldham
Headmaster
Eddie Izzard
James Cleverill
Robert Bathurst
Canteen Lady
Judy Loe
Self
Brian Cox
Screenplay
Director
Writer
Stunt Double
Lucy Cork
Production Design
James Acheson
Original Music Composer
George Fenton
Director of Photography
Peter Hannan
Editor
Julian Rodd
Casting
Irene Lamb
Set Decoration
Naomi Moore