- Nick Patrick - Luke
- Sam Cox - Dr. Derek Buxton
- Dougray Scott - Terry Fisher
- Richard Johnson - Lord Justice Fenwick
- Peter Firth - Charlie Beck
- Lena Headey - Natasha Jackson
- Jon Glover - Quizmaster
- Haydn Gwynne - Mary Armstrong QC
- Annabel Mullion - Martha Miller
- Jonathan Adams - Karol Somper
- Oz Clarke - Sommelier
- Angela Down - Angela Beddoes
- Sarah Howe - Sarah
- Jenny Jules - Alex Wilson
- Rebecca Front - Cathy Winslow
- Teresa Churcher - Fern Lambert
- Mark Strong - Randall
- Pip Torrens - Miles Petersham
- Julian Wadham - Giles Glazebrook QC
- Alison Steadman - Evelyn Marie Kendall
- John Shrapnel - Mr. Justice Griffin
- Geraldine James - Eleanor Harker QC
- Jesse Birdsall - Des Carter
- Paul Brooke - Richard Dynevor
- Linda Bassett - Miss Haddon QC
- Kenneth Cranham - Roy Lawrence
- Di Botcher - Tilly Burgess
- Selina Cadell - Angela Manners
- Anthony Calf - Miles Beddoes
- Richenda Carey - Pamela Erskine
- Mark Benton - Sgt. Redbridge
- Richard Cordery - Eric Rawlings
- Julian Fellowes - Clive Crebbin
- John Bowler - P.C. Couch
- Nicholas Day - Alan Jacobs
- Sean Harris - Mark Holmes
- Penny Downie - Mrs. Rosalind McEnery
- Roger Hammond - Dartwood
- Barry Jackson - Depp
- Deborah Findlay - Susannah Emmott
- Ralph Ineson - DCI Chris Sampson
- Caroline Harker - Rowena Featherstonehaugh
- Patrick Godfrey - Ross Harkins
- Sheila Hancock - Sarah Meadows
- Corey Johnson - Eugene Styles
- Eddie Marsan - Ian Vincent
- Roger Lloyd Pack - Alex Watkins
- Robert Glenister - Clive Pendle
- Andrew Havill - Nicholas Gee
- Lesley Manville - Lucy Cartwright
- Kevin McKidd - David Lomax
- Phyllis Logan - Samantha Fisher
- Hugh Dancy - Michael Woodley
- Paul Rhys - Sam Wicks
- Penelope Wilton - Barbara Watkins
- Bill Nighy - Giles Culpepper QC
- Tracey Wilkinson - Patricia Linzey
- Ewan McGregor - David Robert Armstrong
- Ray Winstone - CPO Evans
- Mark Chapman - Dr. Roberts
- Charles Simpson - Griffiths
- Charles Simpson - Peter Dexter
- Peter Barnes - Crown Court Clerk
- Dermot Crowley - Graham Emerton QC
- Ken Drury - Alan Pearson
- Martyn Ellis - Chris Owen
- Ruth Gemmell - Jenny Norris
- Clare Higgins - Susannah Dixon QC
- Wolf Kahler - Dieter Klausen
- John McArdle - Simon Lloyd
- Jonny Phillips - Kevin Gregson
- Celestine Randall - Eleanor Foxcott
- Amy Phillips - Miranda
- Nick Sutton - Night Club Manager
- Tamara Ustinov - Sarah Lee Gordon
- James Warrior - Dr. Webber
- Matyelok Gibbs - Professor Simunovic
- Janet Maw - Ann Crawley
- Donald Douglas - Mr. Justice Halliwell
- Donald Douglas - Mr. Justice Danforth
- Robin Bailey - Lord Probyn
- Sylvia Syms - Claudia
- Harry Fielder - Jury Member (uncredited)
- Nicholas Clay - Mr. Justice Fulgright
- Ian Gelder - Dr. Clarke
- Rupert Vansittart - Timothy Ealand
- Kenneth Cope - Maurice Fitzalan
- Susan Engel - Mrs. Justice Witrow
- Virginia McKenna - Alice Aldermarten
- David Troughton - DCI Bob Kelso
- Rita Davies - Mrs. Harmer
- Peter Eyre - Bishop of Norfolk
- Ted Childs
Eddie Marsan hace el papel de Ian Vincent.
Bill Nighy interpreta a Giles Culpepper QC en la serie.
Wolf Kahler interpreta a Dieter Klausen en la serie.
Mark Strong interpreta a Randall en la serie.
John Shrapnel interpreta a Mr. Justice Griffin en la serie.
Selina Cadell interpreta a Angela Manners en la serie.
Teresa Churcher interpreta a Fern Lambert en la serie.
Penelope Wilton hace el papel de Barbara Watkins.
Patrick Godfrey interpreta a Ross Harkins en la serie.
Ewan McGregor interpreta a David Robert Armstrong en la serie.
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