| Name | Character | Episodes |
|---|---|---|
| Kaya Scodelario | Anna Salter | 4 |
| Eddie Marsan | Andrew Salter | 4 |
| Shirley Henderson | Claire Salter | 4 |
| Rory Kinnear | David Whitehead | 4 |
| Sean Harris | Stephen Morton | 4 |
| Al Weaver | Anthony | 4 |
| Joe Dempsie | Chris Cooper | 4 |
| Amanda Drew | Jacqui Whitehead | 4 |
| Anatol Yusef | Paul Gould | 4 |
| Rita Davies | Queenie | 2 |