| Name | Character | Episodes |
|---|---|---|
| Callum Turner | Ashley | 3 |
| Andrew Scott | Mark Nicholas | 3 |
| Charlotte Riley | Alice | 3 |
| Gerard Kearns | Daniel | 3 |
| Phil Davis | Tony Nicholas | 3 |
| Julia McKenzie | Betty Nicholas | 3 |
| Aisling Bea | Carly | 3 |
| Douglas Hodge | Inspector Chris Franks | 3 |
| Sam Troughton | Jeff | 3 |
| Toby Regbo | Harry | 3 |
| Martin Clunes | Len Robson | 3 |
| Kelly Adams | Lucy | 3 |
| Dorothy Atkinson | Ann | 3 |
| Danny Sapani | Chief Inspector Duncan | 3 |
| Siobhan Redmond | Kate Nicholas | 3 |
| Jon Foster | Karl | 3 |
| Martin Savage | Steve | 3 |
| Larissa Wilson | Sarah | 3 |
| Lizzie Hopley | Pam | 3 |
| Goldy Notay | Shireen | 3 |