John Hallam (Lamson), John Larroquette (Narrator (unconfirmed)), Tip Tipping (Man Attacked by Zombies), Derek Benfield (Physician), John Benson (Man on Tannoy), Chris Webb (Various Zombies), Rupert Baker (Second Soldier), Del Baker (Soldier at Greenwich), Nicholas Ball (Roger Derebridge), Christopher Barr (Trajectory Officer), Thom Booker (First N.A.S.A. Officer), Milton Cadman (First Soldier), Brian Carroll (Fourth Crewperson), Ian Cashmore (Landing Officer (Heliport)), Patrick Connor (Fatherly Guard), Paul Cooper (Second Guard), Richard D. Sharp (Ship Crewman (as Richard Sharpe)), Nicholas Donnelly (Police Inspector), John Edmunds (BBC Commentator), David English (First Crewperson), Edward Evans (Doctor), Michael Fitzpatrick (Second N.A.S.A. Officer), John Forbes-Robertson (The Minister), Geoffrey Frederick (Communications Officer), John Golightly (Colonel), Elizabeth Heery (Second Radar Technician (as Elizabeth Morton)), Gary Hildreth (Police Surgeon), Owen Holder (First Scientist), Chris Jagger (First Vampire (as Christopher Jagger)), Michael John Paliotti (Third Crewperson), John Keegan (Guard), William Lindsay (Colonel's Aide), Sidney Livingstone (Ned Price), Jamie Long (Rawlings), Peter Lovstrom (First Boy in Park (as Peter Løvstrøm)), Bill Malin (Second Vampire), Hauke Martin (Zombie Shot in Head), Richard Oldfield (Mission Leader), Ken Parry (Sykes), Nancy Paul (Ellen Donaldson), Peter Porteous (Prime Minister), Carl Rigg (Brendan - First Radar Technician), Katherine Schofield (Prime Minister's Secretary), Russell Sommers (Navigation Officer), Chris Sullivan (Kelly), Burnell Tucker (N.A.S.A. Man), Haydn Wood (Helicopter Pilot), John Woodnutt (Metallurgist)

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Cannon Group, The, Cannon-City Distribution, Easedram Limited, Esselte CIC Video, Golan-Globus Productions, Guild Home Video, Image Entertainment, London-Cannon Films, TriStar Pictures