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

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

Celine Arden

as Gwen (As Celine Abrahams)