| Emily Berrington | Niska |
| Will Tudor | V |
| Katherine Parkinson | Laura Hawkins |
| Thusitha Jayasundera | Neha |
| Gemma Chan | Mia |
| Mark Bonnar | Neil |
| Matthew Marsh | Lord Dryden |
| Neil D'Souza | Steve Covell |
| Ladi Emeruwa | Alistair Davis |
| Phil Dunster | Tristan |
| Will Payne | Ferdinand |
| Ivanno Jeremiah | Max |
| Colin Morgan | Leo Elster |
| Dino Fetscher | Stanley |
| Lucy Carless | Mattie Hawkins |
| Emily Bowker | Harriet |
| Billy Jenkins | Seraph Sam |
| Staz Nair | Gordon |
| Tom Goodman-Hill | Joe Hawkins |
| Pixie Davies | Sophie Hawkins |
| Theo Stevenson | Toby Hawkins |
| Leemore Marrett Jr. | Kyle |
| Roger Dipper | Arresting Officer |
| Nicole Castillo-Mavromatis | Synth |
| Chris Cowlin | Police Officer |
| Hannah Flynn | Synth |
| Nicholas Frentz | Green Eyed Synth |
| Lee Nicholas Harris | Riot Police Officer |
| Matthew Marcelis | Howard |
| Susannah Owen | Green Eyed Synth |
| Stephanie Tripp | Neil's OSB Piper |
| Zsoly Vatany | Synth Rebel |