| Name | Character | Episodes |
|---|---|---|
| Idris Elba | Kent | 6 |
| Patrick Gibson | Connor Fallon | 6 |
| Freida Pinto | Jas Mitra | 6 |
| Babou Ceesay | Marcus | 6 |
| Rory Kinnear | Pence | 6 |
| Zawe Ashton | Omega | 6 |
| Wunmi Mosaku | Kenya | 6 |
| Patsy Ferran | Ronnie's Girl | 6 |
| Neve McIntosh | Emily Pence | 6 |
| Daniel Mays | Cullen | 6 |
| Denise Gough | Fallon | 6 |
| Brandon Scott | Leroy | 6 |
| Rob Jarvis | Ackerley | 6 |
| Sophia Brown | Christine | 6 |
| Seeta Indrani | Savi Mitra | 6 |
| Tadhg Murphy | Eóin | 6 |
| Nathaniel Martello-White | Dhari | 6 |
| Nicholas Pinnock | Julian | 6 |
| Bella Dayne | Eliette | 2 |