| Name | Character | Episodes |
|---|---|---|
| John Hannah | Jack Roper | 14 |
| Paul Freeman | Laurence Scammel QC | 14 |
| Lisa Faulkner | Laura Scammel | 14 |
| Jayne Ashbourne | Sally Benn | 14 |
| Penny Downie | Honor Scammel | 14 |
| John Thomson | Charlie Darling | 14 |
| Ace Bhatti | Ash Aslan | 14 |
| Lee Williams | Joe Stevens | 14 |
| Lara Cazalet | Annie Quick | 14 |
| Chris Gascoyne | Al Ware | 14 |
| Don Warrington | 6 | |
| Don Warrington | Judge Ken Winyard | 6 |
| Tara Moran | 3 | |
| David Harewood | 2 | |
| Sean Gallagher | 2 | |
| Nikki Sanderson | 2 | |
| Holliday Grainger | 1 | |
| Sam Kelly | 1 | |
| Dean Andrews | 1 | |
| Samantha Power | 1 | |
| Colin McFarlane | 1 | |
| Philip Glenister | 1 | |
| Rebecca Atkinson | 1 | |
| Nitin Ganatra | 1 | |
| Christine Tremarco | 1 | |
| Steve Evets | 1 | |
| Mark Womack | 1 | |
| Georgia Taylor | 1 | |
| Tony Slattery | 1 | |
| Reece Noi | 1 | |
| Les Dennis | 1 | |
| Diane Keen | 1 | |
| Vincent Ebrahim | 1 | |
| Alice Barry | 1 | |
| Shobna Gulati | 1 | |
| Alan Rothwell | 1 | |
| Tony Monroe | 1 | |
| Emma Atkins | 1 | |
| Andrew Schofield | 1 |