Ben Wheatley Director, Screenwriter Neil Maskell Jay Actor Michael Smiley Gal Actor MyAnna Buring Shel Actor Emma Fryer Fiona Actor Ben Crompton Justin Actor Robin Hill Stuart Actor, Film Editing James Nickerson M.P. Actor Harry Simpson Sam Actor Robert Hill High Priest Actor Gemma Lise Thorton Keira Actor Amy Jump Screenwriter Robin Gutch Executive Producer Hugo Heppell Executive Producer Mark Herbert Executive Producer Katherine Butler Executive Producer Laurie Rose Cinematographer Ali Fearnley Casting