Simon Haycock as Thomas Dunn

Lucy Drive as Mandy Dunn

Julie Hoult as Harriet

Danny Steele as Floyd

Sophie Anderson as Samantha

Jon Campling as Lucian

Toyah Willcox as Claire Dove

Michael Bott as Commander Jeff Phillburn

Kate Davies-Speak as Lt. Claire Dangerfield

Julian Boote as Lt. Alan Carter

Ian Brooker as Father Robert

John Dyer as Prime Minister Carl Henderson

Nina Stratford as President of the United States

Ben Shockley as Billy McCoy

Craig Rogers as Brian Dunn

Cameron Moon as Khan

Koral Neil as Jenny Marshall

Philip Jennings as UK Secretary of Defense

Amira Whitaker as Tamara Montgomery

Roger Harding as General Goldman

Nick Lancaster as Kaleidoscope Man

Ian Reddington as Gerry Miller

Paul Alayo as Freddy Dunn

Celine Abrahams as Gwen

Holly Jacobson as Young Harriet

Geneviève Lowe as CAT Assassin

Martin Smith as Assassin's Victim

Steve Price as Running Zombie

Jamie-Lee Beacher as Zombie