| Name | Character | Episodes |
|---|---|---|
| John Carlisle | Judge Trafford | 26 |
| Nicholas Jones | Jeremy Aldermarten QC | 26 |
| John Thaw | James Kavanagh QC | 26 |
| Anna Chancellor | Julia Piper | 26 |
| Oliver Ford Davies | Peter Foxcott QC | 26 |
| Cliff Parisi | Tom Buckley | 26 |
| Sam Cox | Dr. Derek Buxton | 26 |
| Lisa Harrow | Lizzie Kavanagh | 26 |
| Geraldine James | Eleanor Harker QC | 5 |
| Rebecca Front | Cathy Winslow | 4 |
| Jenny Jules | Alex Wilson | 2 |
| Lena Headey | Natasha Jackson | 1 |
| Pip Torrens | Miles Petersham | 1 |
| Bill Nighy | Giles Culpepper QC | 1 |
| Mark Strong | Randall | 1 |
| Ewan McGregor | David Robert Armstrong | 1 |
| Hugh Dancy | Michael Woodley | 1 |
| Phyllis Logan | Samantha Fisher | 1 |
| Ralph Ineson | DCI Chris Sampson | 1 |
| Dougray Scott | Terry Fisher | 1 |
| Eddie Marsan | Ian Vincent | 1 |
| Samantha Bond | Sarah Swithen | 1 |
| Ray Winstone | CPO Evans | 1 |
| Kevin McKidd | David Lomax | 1 |
| Wolf Kahler | Dieter Klausen | 1 |
| Ken Drury | Alan Pearson | 1 |
| Teresa Churcher | Fern Lambert | 1 |
| Paul Brooke | Richard Dynevor | 1 |
| Richard Cordery | Eric Rawlings | 1 |
| Janet Maw | Ann Crawley | 1 |
| Lesley Manville | Lucy Cartwright | 1 |
| Clare Higgins | Susannah Dixon QC | 1 |
| Rupert Penry-Jones | Lt. Ralph Kinross | 1 |
| Peter Firth | Charlie Beck | 1 |
| Sean Harris | Mark Holmes | 1 |
| Alison Steadman | Evelyn Marie Kendall | 1 |
| Kenneth Cranham | Roy Lawrence | 1 |
| Jonathan Adams | Karol Somper | 1 |
| Julian Fellowes | Clive Crebbin | 1 |
| Selina Cadell | Angela Manners | 1 |
| Deborah Findlay | Susannah Emmott | 1 |
| Paul Rhys | Sam Wicks | 1 |
| Linda Bassett | Miss Haddon QC | 1 |
| Larry Lamb | Alan Rainer | 1 |
| Caroline Harker | Rowena Featherstonehaugh | 1 |
| Anthony Calf | Miles Beddoes | 1 |
| Rita Davies | Mrs. Harmer | 1 |
| Roger Lloyd Pack | Alex Watkins | 1 |
| Corey Johnson | Eugene Styles | 1 |
| Andrew Havill | Nicholas Gee | 1 |
| Matyelok Gibbs | Professor Simunovic | 1 |
| Nicholas Clay | Mr. Justice Fulgright | 1 |
| Penny Downie | Mrs. Rosalind McEnery | 1 |
| Robert Glenister | Clive Pendle | 1 |
| Penelope Wilton | Barbara Watkins | 1 |
| Ruth Gemmell | Jenny Norris | 1 |
| Barry Jackson | Depp | 1 |
| John Shrapnel | Mr. Justice Griffin | 1 |
| Rupert Vansittart | Timothy Ealand | 1 |
| Richard Johnson | Lord Justice Fenwick | 1 |
| Roger Hammond | Dartwood | 1 |
| Jesse Birdsall | Des Carter | 1 |
| Mark Benton | Sgt. Redbridge | 1 |
| Sylvia Syms | Claudia | 1 |
| David Troughton | DCI Bob Kelso | 1 |
| Dermot Crowley | Graham Emerton QC | 1 |
| Donald Douglas | Mr. Justice Halliwell | 1 |
| Donald Douglas | Mr. Justice Danforth | 1 |
| Nick Dunning | Simon Bayliss | 1 |
| Tim Pigott-Smith | Mark Yelland | 1 |
| Jon Glover | Quizmaster | 1 |
| James Warrior | Dr. Webber | 1 |
| John Bowler | P.C. Couch | 1 |
| Jonny Phillips | Kevin Gregson | 1 |
| Roger Brierley | Judge Challis | 1 |
| Haydn Gwynne | Mary Armstrong QC | 1 |
| Patrick Godfrey | Ross Harkins | 1 |
| Julian Wadham | Giles Glazebrook QC | 1 |
| Nicholas Day | Alan Jacobs | 1 |
| Virginia McKenna | Alice Aldermarten | 1 |
| Annabel Mullion | Martha Miller | 1 |
| Richenda Carey | Pamela Erskine | 1 |
| Kenneth Cope | Maurice Fitzalan | 1 |
| Harry Fielder | Jury Member (uncredited) | 1 |
| Faith Edwards | Court Usher | 1 |
| Oz Clarke | Sommelier | 1 |
| Ian Gelder | Dr. Clarke | 1 |
| Susan Engel | Mrs. Justice Witrow | 1 |
| Martyn Ellis | Chris Owen | 1 |
| Tamara Ustinov | Sarah Lee Gordon | 1 |
| Amy Phillips | Miranda | 1 |
| Nick Sutton | Night Club Manager | 1 |