| Martin Trenaman |
PC Dennis Babb |
| Rhys Ap Trefor |
PC Lee Cushion |
| Rhian Green |
PC Grace Williams |
| Laura Dalgleish |
PC Wendy Bevan |
| Sion Pritchard |
PC Gavin Howells |
| Simon Holland Roberts |
Sgt Price |
| Sarah Breese |
Sian |
| Lisa Jên Brown |
Ensemble Actor (Series 1) |
| Tony Gardner |
Ensemble Actor (Series 1) |
| Mark Henry Davies |
Ensemble Actor (Series 3-4) |
| Llyr Evans |
Ensemble Actor (Series 3) |
| Eiry Thomas |
Ensemble Actor (Series 3) |
| Rebecca Wilson |
Ensemble Actor (Series 3-4) |
| Colin Hoult |
Ensemble Actor (Series 4) |
| Mali Ann Rees |
Ensemble Actor (Series 4) |