| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 William Armstrong | Crew | Writing | Writer | 4 |
 John Gillanders | Crew | Editing | Editor | 1 |
Ray Orton | Crew | Camera | Director of Photography | 4 |
Richard Hammatt | Crew | Crew | Stunt Coordinator | 1 |
Rob Gittins | Crew | Writing | Writer | 3 |
Tim Whitby | Crew | Directing | Director | 4 |
 Lee Haven Jones | Crew | Directing | Director | 7 |
Nicholas Martin | Crew | Writing | Writer | 2 |
Deep Sehgal | Crew | Directing | Director | 1 |
William Oswald | Crew | Editing | Editor | 5 |
Deborah Williams | Crew | Editing | Editor | 1 |
Gwennan Sage | Crew | Directing | Director | 3 |
Sian Naiomi | Crew | Writing | Writer | 2 |
Catrin Clarke | Crew | Writing | Writer | 3 |
 Alun ap Brinley | Cast | Actor | Sgt. Emlyn Dawkins | 6 |
 Ayesha Dharker | Cast | Actress | Kamini Sharma | 15 |
Beth Robert | Cast | Sylvia Sharpe | 5 | |
 Dafydd Hywel | Cast | Actor | Ceri Joseph | 10 |
 Ifan Huw Dafydd | Cast | Actor | Owen Griffiths | 15 |
 Indira Joshi | Cast | Actress | Pushpa Bakshi | 5 |
 Jâms Thomas | Cast | Actor | Wyn | 1 |
 Mali Harries | Cast | Actress | Megan Evans | 15 |
 Mark Heap | Cast | Actor | Rev. Herbert Todd | 5 |
 Mark Williams | Cast | Actor | Richard Sharpe | 5 |
 Sanjeev Bhaskar | Cast | Actor | Dr. Prem Sharma | 15 |
 William Houston | Cast | Actor | Basil Thomas | 5 |
Eiry Thomas | Cast | Mrs. Williams | 5 | |
Sara Lloyd | Cast | Actress | Mary Lewis | 5 |
Ben McGregor | Cast | Actor | Rhys | 1 |
 Naomi Battrick | Cast | Actress | Verity Todd | 5 |
 Alexander Vlahos | Cast | Actor | Tom Evans | 5 |
Ian M. Court | Cast | Police Constable | 1 | |
 Matthew Aubrey | Cast | Actor | Aled Williams | 5 |
 Naomi Everson | Cast | Gina Niccoli | 10 | |
 Owain Rhys Davies | Cast | Aled | 1 | |
 Siôn Pritchard | Cast | Daf Jones | 5 | |
Julian Gillard | Cast | Miner | 3 | |
 Brendan Charleson | Cast | Actor | Bentley | 1 |
Ceri Murphy | Cast | Actor | Graham | 5 |
 Rhydian Jones | Cast | Robert Thomas | 5 | |
 Carwyn Glyn | Cast | Actor | Carwyn Rogers | 2 |
 Rhys ap William | Cast | Actor | Dafydd Lewis | 4 |
 Nathan Sussex | Cast | Actor | Morgan Rowlands | 1 |
 Catrin Aaron | Cast | Actress | Mrs. Germin | 3 |
 Gareth John Bale | Cast | Mining Engineer | 1 | |
 John Weldon | Cast | Actor | Dafydd Lewis | 1 |
Stacey Daly | Cast | Elaine | 1 | |
 Huw Euron | Cast | Actor | Delivery man | 1 |
Kyle Rees | Cast | Trystan | 1 | |
Jacob Oakley | Cast | Dan Griffiths | 15 | |
Erica Eirian | Cast | Sian Davies | 15 | |
James Morgan | Cast | Actor | Harri | 10 |
 Lee Mengo | Cast | Bryn | 2 | |
Clare Hingott | Cast | Beryl | 2 | |
Iestyn Jones | Cast | Rhodri | 1 | |
Glyn Pritchard | Cast | Whipper In | 1 | |
Gwenllian Rhys | Cast | Bronwen | 1 | |
Rebecca Harries | Cast | Meinir Rogers | 2 | |
Dion Davies | Cast | PC Jones | 1 | |
Katy Sobey | Cast | Esther Adams | 1 | |
Aisling Groves McKeown | Cast | Tonya | 1 | |
Carl Sykes | Cast | Heavy | 1 | |
 Gwawr Loader | Cast | Actress | Julie | 2 |
Christine Pritchard | Cast | Actress | Mrs. Daniels | 4 |
| Person | Type | Job | Role(s) | Episodes |
