| Name | Character | Episodes |
|---|---|---|
| Dervla Kirwan | Maeve Sullivan | 6 |
| Stephen Tompkinson | Mark Roberts | 6 |
| Peter O'Brien | Freddie Thompson | 2 |
| David Bradley | Alan Roberts | 1 |
| Mark Bazeley | Ben Lester | 1 |
| Amanda Abbington | Rebecca Jacobs | 1 |
| Callum Blue | Nick MacIntyre | 1 |
| Patrick Godfrey | Ed | 1 |
| Marion Bailey | Caroline MacIntyre | 1 |
| Ali Bastian | Lucy | 1 |
| Annette Ekblom | Sophie Viner | 1 |