Jessie Buckley (Harper), Rory Kinnear (Geoffrey), Paapa Essiedu (James), Gayle Rankin (Riley), Sarah Twomey (Police Officer Frieda), Zak Rothera-Oxley (Samuel), Sonoya Mizuno (Police Operator (voice))

Andrew Macdonald (Producer), Alex Garland (Writer), Glenn Freemantle (Sound Designer), Glenn Freemantle (Supervising Sound Editor), Allon Reich (Producer), Mark Digby (Production Design), Jamie Edgell (Stunt Coordinator) more..., Geoff Barrow (Original Music Composer), Rob Hardy (Director of Photography), Jake Roberts (Editor), Ben Salisbury (Original Music Composer), Phil Chapman (Special Effects), Heather Leat (Costume Supervisor), Lisa Duncan (Costume Design), Austin Aplin (Visual Effects Producer), Jennifer Groves (Special Effects Technician), Kharmel Cochrane (Casting), Raquel Guirro (Special Effects), Nick Freemantle (Sound Effects Editor), Clare St. John (Post Production Supervisor), Danni Lizaitis (Second Assistant Director), David Simpson (Visual Effects Supervisor), Zoe Liang (First Assistant Director), Barney Shakespeare (Second Second Assistant Director), Cahal Bannon (Co-Producer), Edward Chiswell Jones (Special Effects Technician), Gillian Dodders (Supervising Dialogue Editor), Ben Barker (Supervising Sound Editor), Danny Freemantle (Sound Editor), Glen Gathard (Foley Mixer), Adam McCreight (Property Master), Howard Bargroff (Sound Re-Recording Mixer), Tristan Versluis (Prosthetic Designer), San Davey (Script Supervisor), Jo Berglund (Assistant Set Decoration), Christina Low (Stunt Double), Richard Spooner (Additional Sound Re-Recording Mixer), Sunita Parmar (Prosthetic Makeup Artist), Zoe Freed (Foley Artist), Robert Malone (Sound Editor) and others.