| Name | Character | Episodes |
|---|---|---|
| Aisling Franciosi | Georgia Cunningham | 12 |
| Louise Brealey | Jude McDermid | 12 |
| Rachel Hurd-Wood | Rachel Maddox | 12 |
| Synnøve Karlsen | Holly McStay | 12 |
| Ella-Rae Smith | Phoebe Parker-Fox | 12 |
| Emma Appleton | Fay Brookstone | 12 |
| Jack Bannon | James Buxton | 6 |
| Richard Gadd | Ben Howard | 6 |
| Sophia Brown | Louise Taggart | 6 |
| Sorcha Groundsell | Elizabeth Smith | 6 |
| Harris Dickinson | Sam | 4 |
| Imogen King | Rayna | 1 |