| Name | Character | Episodes |
|---|---|---|
| Paul Bentall | Frank | 6 |
| Sue Johnston | Cecily | 6 |
| T'Nia Miller | Charlie's Mother | 6 |
| Robert Lindsay | Morgan | 6 |
| Anita Dobson | Janine | 6 |
| Jay Lycurgo | Charlie | 6 |
| Lewis Gribben | Stef | 6 |
| Robin Hill | Karl | 5 |
| John Hollingworth | Sergeant Parrenster | 4 |
| Shameem Ahmad | Dr. Kallernam | 2 |
| Ellora Torchia | Gil Lonian | 1 |
| Ryan Pope | Clacy | 1 |
| Maanuv Thiara | Malcolm | 1 |
| Garrick Hagon | Gabe | 1 |
| Andrew Kazamia | Joseph | 1 |
| John Hollingworth | Parrenster | 1 |
| Naveed Khan | Salem Shah | 1 |
| Rebecca Humphries | Jane | 1 |
| Joss Carter | Ciaran | 1 |