Neil Clarke
Catherine
Grant
Ray
Fenella
Rosie
Headmaster
James Cleverill
Canteen Lady
Self
Fiona
Miss Pringle
Newsreader
Dennis the Dog (voice)
Chief Alien (voice)
Nasty Alien (voice)
Salubrious Gat (voice)
Scientist Alien (voice) / Van Driver
Kindly Alien (voice)
Sandwich Girl
Author
Security Man
Mortician
Policeman