| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Gub Neal | Crew | Production | Executive Producer | 8 |
 Mark Milsome | Crew | Crew | Cinematography, Director of Photography | 8 |
 Catrin Lewis Defis | Crew | Production | Producer | 8 |
 Philip John | Crew | Directing | Director | 8 |
Patrick Irwin | Crew | Production | Executive Producer | 8 |
Greg Fleming | Crew | Sound | Music | 8 |
Roger Williams | Crew | Writing | Writer, Executive Producer, Creator, Creator | 8 |
 David Hayman | Cast | Actor | Jeff Campbell | 6 |
 Kate Jarman | Cast | Marie | 5 | |
 Nia Roberts | Cast | Actress | Linda Jenkins | 14 |
 Suzanne Packer | Cast | Actress | Chief Inspector Layla Davies | 14 |
 Catrin Stewart | Cast | Actress | PC Gina Jenkins | 14 |
Claire Cage | Cast | Actress | Leanne | 2 |
 Dyfan Dwyfor | Cast | Actor | DI Morgan Riley | 6 |
Sara Lloyd | Cast | Actress | Patricia Rose | 8 |
 Chris Reilly | Cast | Actor | Ray Murray | 8 |
 Darren Evans | Cast | Actor | Steffan | 1 |
 Alexander Vlahos | Cast | Actor | Dai Llewellyn | 4 |
 Gwyneth Keyworth | Cast | Actress | Ela | 4 |
 Matthew Aubrey | Cast | Actor | Rhys | 4 |
Lisa Nicol | Cast | Jan | 2 | |
 Alexandria Riley | Cast | Actress | Tracy | 2 |
 Jacob Ifan | Cast | Actor | Sam Jenkins | 14 |
Ceri Murphy | Cast | Actor | Aled | 2 |
 Rhydian Jones | Cast | Russell Lloyd-Davies | 4 | |
 Jack Parry-Jones | Cast | Actor | PC Luke Lloyd | 14 |
 Rachel Isaac | Cast | Actress | Eve | 4 |
 Lloyd Everitt | Cast | Actor | Mark | 2 |
 Hedydd Dylan | Cast | Actress | Caryn Riley | 6 |
 Gareth Jewell | Cast | Actor | DCI Carl Roberts | 8 |
Kyle Rees | Cast | Wynn Edwards | 1 | |
Saran Morgan | Cast | Gemma | 1 | |
 Charlotte O'Leary | Cast | Actress | Kayleigh | 1 |
 Sophie Melville | Cast | Actress | Marissa Clarke | 3 |
 Chris Gordon | Cast | Actor | Richie Campbell | 5 |
Berwyn Pearce | Cast | Duncan | 3 | |
 Tim Preston | Cast | Actor | Harri Schofield | 6 |
| Person | Type | Job | Role(s) | Episodes |
