| Leanne Best | Jackie |
| Vicky McClure | Fleming |
| Arsher Ali | Hari |
| Adrian Dunbar | Hastings |
| Craig Parkinson | Cottan |
| Martin Compston | Arnott |
| Lisa Palfrey | McAndrew |
| Maya Sondhi | Maneet |
| Jonas Armstrong | Joe |
| Melissa Dean | Care Worker |
| Kiran Landa | Laila |
| Keeley Hawes | Lindsay |
| Polly Walker | Gill |
| Julia Dearden | Judge |
| Adjoa Andoh | Prosecution |
| Poppy Miller | Defence |
| Shaun Parkes | Reynolds |
| Ash Cook | Young Joseph Nash
(uncredited) |
| James Edlin | AFO Lambert
(uncredited) |
| Chrissie Harris | Police Officer AC-12
(uncredited) |
| Hugh Irvine | CSI Officer Burslem
(uncredited) |
| Simon Millar | Cameraman
(uncredited) |
| Terry Noble | Dale Roach
(uncredited) |
| Kristy Robinson | AFO Karen Black
(uncredited) |
| Aaron Rolph | Armed Forces Officer
(uncredited) |