| Name | Character | Episodes |
|---|---|---|
| Oliver Milburn | 14 | |
| Alex Norton | 14 | |
| Matthew Rhys | PC Steve 'Hiccup' Higson | 14 |
| Peter Sullivan | Det. Insp. Overton | 14 |
| Nick Miles | 14 | |
| James Gaddas | 14 | |
| Amelda Brown | 8 | |
| Trevor Byfield | 2 | |
| Daniel Newman | 1 | |
| Richard Cordery | Dan Romilley | 1 |
| Sarah Smart | 1 | |
| Don Warrington | 1 | |
| Al Hunter Ashton | 1 | |
| Colin McFarlane | 1 | |
| Barry Jackson | Doctor Flynn | 1 |
| Alan Cooke | 1 | |
| George Irving | 1 | |
| Richard Haydn | 1 | |
| Ayub Khan-Din | 1 | |
| Steve Toussaint | 1 | |
| Rob Spendlove | 1 | |
| Freddie Earlle | 1 | |
| Trevor Thomas | 1 | |
| Zita Sattar | 1 | |
| Albert Moses | 1 | |
| Melanie Walters | 1 | |
| Hilary Reynolds | 1 | |
| Michelle Bonnard | 1 | |
| Jacki Piper | 1 |