Brian O'Malley Director Liam Cunningham Six Actor Pollyanna McIntosh PC. Rachel Heggie Actor Bryan Larkin PC. Jack Warnock Actor Hanna Stanbridge PC. Jennifer Mundie Actor Douglas Russell Sgt. MacReady Actor Niall Greig Fulton Dr. Duncan Hume Actor Jonathan Watson Ralph Beswick Actor Brian Vernel Caesar Sargison Actor David Cairns Screenwriter Fiona Watson Screenwriter Lee Brazier Executive Producer James Daly Executive Producer Chris Hainsworth Executive Producer Nick Munday Executive Producer Eddie Dick Producer Brendan McCarthy Producer John McDonnell Producer Steve Lynch Original Music Piers McGrail Cinematographer Tony Kearns Film Editing Alison Crosbie Casting James Lapsley Production Design