| Name | Character | Episodes |
|---|---|---|
| Indira Varma | Elaine | 4 |
| David Threlfall | Len Harper | 4 |
| Alexander Arnold | Adam | 4 |
| Claudie Blakley | Patricia | 4 |
| Victoria Hamilton | Peggy | 4 |
| Russell Tovey | Michael | 4 |
| Amber Rose Revah | Vidya | 4 |
| Terence Beesley | 4 | |
| David Bamber | Joe | 4 |
| Denise Gough | Liz Fletcher | 4 |
| Lisa Millett | DCI Alice Yapp | 4 |
| Lee Nicholas Harris | Desk Sergeant | 4 |
| Steven Mackintosh | Kieron | 4 |