- Nigel Stock - General Sir Charles Lamborbey
- Elizabeth Spriggs - Mrs. Kyneston
- Jeremy Clyde - Martin Jessell
- Lisa Harrow - Anne Kyneston
- Terence Longdon - Patrick Hawkes
- Philip Madoc - Det. Chief Insp. Lewis
- Peter Arne - Dr. Hamad
- Edward Fox - Tony Davis-Jones
- Bernard Kay - Norman Hobson
- Peter Jeffrey - Cedric Lambert
- Hugh Manning - Master of College
- Milton Johns - Professor Kirk
- Noel Johnson - Dr. Worseley
- Richard Hurndall - Judge
- Paul Chapman - Dr. Varney
- Frank Mills - Cmdr. Jennings
- Damien Thomas - Prince Sullman
- Edgar Wreford - Prince Rashid
- Rachel Kempson - Miss Daley
- Clive Swift - Graham Richards
- Olaf Pooley - Adams
- Ian Dewar - Police Driver
- Zia Mohyeddin - Lutaf Adamjee
- Robin Parkinson - Council Official
- Harry Beety - Inspector Lawrence
- Harry Beety - Manager
- Louise Pajo - Sally
- Neil McCallum - Cooper
- Geoffrey Palmer - Asst. Chief Constable Rogers
- Arnold Peters - PC Banks
- Desmond Jordan - Caretaker
- James Drake - Warder
- Michael Johnson - Martin Ingram
- Anne Kristen - Susan
- Fulton Mackay - Judge
- Alan MacNaughtan - Andrew Baker QC
- Frank Moorey - Dr Davis
- Bay White - Mrs Bradstreet
- Peter Barkworth - Williams
- Timothy Bateson - Gregg
- John Grieve - Jezzard
- Basil Henson - Frank Houghton
- Kenneth Colley - Foreman
- Kenneth Colley - Munt
- Jean Marsh - Sybil Houghton
- Glyn Owen - Thorpe
- Gillian Bailey - Denise Bates
- Gordon Bilboe - Bus Mechanic
- Michael Gwynn - Stephen Trimmer
- Frederick Hall - Bus Driver
- Mark Heath - Bus Conductor
- Glyn Houston - Jack Norton
- Stella Tanner - Vera Norton
- Graham Weston - Bill
- Sandra Bryant - Girl
- Nicholas Evans - Swallow
- James Laurenson - Norry
- Ralph Michael - Dad Elliot
- Patrick Tull - Man
- Janet Whiteside - Mrs Jones
- Eve Pearce - Mrs Parker
- Eve Pearce - Mrs Waring
- Keith Ashton - Young Boy
- Edward Brayshaw - George Blair
- Lyndon Brook - Victor Franklin
- Sylvia Kay - Wilma Franklin
- Beatrix Lehmann - Emma Franklin
- Roddy McMillan - Ernst Farago
- John Nettles - John Franklin
- Daphne Heard - Mrs Dipper
- Martin Howells - Dil Leonard
- Glyn Jones - Geraint Leonard
- Clare Kelly - Mrs Clark
- Paddy Joyce - Davis
- Libby Glenn - Yvonne Fry
- Catherine Kessler - Girl
- Eric Dodson - Ackroyd
- Eric Dodson - Motorist
- Sally Lahee - Mrs Hodder
- Jay Neill - CID Officer
- Jay Neill - Policeman
- Cherith Mellor - Betsy Lewis
- Moray Watson - Dr Spencer
- James Bree - Mr Phelan
- Harriette Johns - Mrs Phelan
- Eric Lander - Scott
- Margery Mason - Miss Peters
- Mary Merrall - Mrs Peters
- Jenifer Armitage - Jean Marshall
- Peter Davies - Nick Carter
- Windsor Davies - Dick Bennett
- Richard Easton - Sindall
- Donald Gee - Dr Creasey
- Gawn Grainger - Ron Taylor
- Roger Hammond - Gibbon
- Gregory Phillips - Haig
- David Pinner - PC Moss
- Peter Tilbury - Sgt Hughes
- Donald Webster - Detective Sgt Peters
- George Waring - Mr Lewis
- Anthony Bate - Harry Fletcher
- Keith Campbell - Judge
- Ann Lynn - Ruth Fletcher
- James Maxwell - Michael Jackson
- Aubrey Richards - Prout
- David Horovitch - David Williams
- André Morell - Major Williams
- Joanna Van Gyseghem - Joan Williams
- Alethea Charlton - Pat Elliot
- Alethea Charlton - Alice Simpson
- Steven Berkoff - Mike Barratt
- Sheila Brennan - Sally Edwards
- Peter Diamond - Second Soldier
- Peter Ellis - Inspector Wallace
- Edward Kelsey - Jimmy
- Edward Kelsey - Workman
- Nerys Hughes - Maria Denton
- David March - Barman
- Alan Meadows - First Soldier
- Jeff Shankley - Jimmy Dunn
- David Sumner - Ralph Denton
- Brian Blessed - Hubert Innes
- Faith Brook - Judy Bodley
- William Lucas - Chief Superintendant Eyre
- Daniel Moynihan - Antony Bodley
- Leon Eagles - Wally
- Jonathan Holt - Sgt Evans
- Josie Kidd - Joan Atkins
- Patricia Lawrence - Mrs Atkins
- Reg Lye - Mr Atkins
- Angela Pleasence - Tina
- Fanny Rowe - Mrs Seymour
- Denis Carey - Barrington
- Michael Elwyn - Colin Wayman
- John Forbes-Robertson - Martin
- Barbara New - Mrs Prior
- Valerie White - Mrs Wayman
- Veronica Strong - Vivien
- Veronica Strong - Jean Buckley
- Edward Dentith - Arthur Goodwin
- Kenneth Farrington - Leo Yates
- Kenneth Farrington - Paul Conway
- William Dexter - James Bowes
- Robert James - Dr Mitchell
- David Langton - Francis Morton
- Sara Aimson - Mary
- A. J. Brown - Jones
- John Carson - Sewell
- Peter Copley - Hillard
- Hamilton Dyce - Judge
- David Hargreaves - Sgt Cook
- David Hargreaves - Harry
- Brian Badcoe - Dr Harris
- Brian Badcoe - Setter
- Joseph Greig - Davis
- John Henderson - Foreman of the Jury
- Ann Penfold - Tim's Girlfriend
- Ann Penfold - Alice Murdoch
- Lesley Nunnerley - Jill
- David Quilter - Shaw
- Kenneth Shanley - PC Perry
- Jack Smethurst - Granger
- Bill Clancy - Bill
- Colin Douglas - Dr Durley
- Anne Rutter - June Vincent
- Zohra Segal - Mrs Singh
- John Bailey - William Murray QC
- John Bailey - William Murray, QC
- Tom Chadbon - Dennis Lewis
- Tom Chadbon - Mr. Jones, QC
- Sheila Fearn - Jean Chambers
- Ruth Kettlewell - Mrs Chambers
- Mike Lucas - Ben Chambers
- Sally Nesbitt - Jane Carter
- Rebecca Saire - Jenny Chambers
- David Steuart - Mr Ryder
- Gary Watson - Tony Blanchard
- Leslie Anderson - Jack Page
- Penny Service - Nurse
- Peter Vaughan - Richard Toller
- Gilbert Wynne - George Tanner
- Joby Blanshard - Signalman
- Michael Hawkins - George Samuel
- Alfred Hoffman - Man on Train
- John Kelland - Eddie Naylor
- Jaqueline Lawrence - Christine Naylor
- Nora Nicholson - Georgina Samuel
- Delia Paton - Ivy Hewitt
- Jeannette Wild - Noreen Scott
- Liane Aukin - Emily Stafford
- Reginald Barratt - Parson
- Lewis Fiander - Dr Gardner
- Ewan Hooper - John Stafford
- Pauline Delaney - Penny Goodwin
- Pauline Delaney - Nurse Reynolds
- Beatrice Kane - Mrs Stafford
- Jennie Paul - Mrs Yarrow
- Norman Scace - Dr Lowther
- Peter Swanwick - Chemist
- Tony Arpino - Bruiser
- Michael Brennan - Superintendent Cramer
- Tony Caunter - Robinson
- Barry Creyton - Dr Phillips
- Caron Gardner - Muriel
- Harold Goodwin - Benson
- Barry Lowe - Jones
- Peter Madden - Shupper
- Reg Pritchard - Brown
- Alan Tilvern - Knowles
- Maurice Travers - Clements
- Katy Wild - Linda
- Richard Wilding - Sgt Amber
- Tom Criddle - Verney
- Jimmy Gardner - Webb
- Patricia Heneghan - Sheila Richards
- Iain Anders - Sgt Fennell
- John Baddeley - Joseph Gudgeon
- Derek Benfield - Harry Murdoch
- Donald Bisset - Charles Williams
- George A. Cooper - Arnold Bottomley
- Edward Evans - Adam Crouch
- Geoffrey Hinsliff - Malcolm Crouch
- Julia Jones - Mrs Bottomley
- Geoffrey Matthews - George Lincoln
- Helen Lindsay - Susan Toller
- Helen Lindsay - Adele Stratton
- John Rolfe - Tom Fanshaw
- Frederick Treves - Alec Lampitt
- Michael Cadman - David Bromfield
- Tom Chatto - Noran Sherwood
- Lucinda Curtis - Mary Taylor
- Barrie Fletcher - Police Sergeant
- John Gabriel - Thomas Barling
- Del Henney - Jim Lane
- Jim McManus - Ambulance man
- John Nettleton - Inspector Gresham
- Geoffrey Chater - Caldicott
- Geoffrey Chater - Tom Caldicott
- Frederick Peisley - Joe Crane
- John Stratton - Joe Bromfield
- Cleo Sylvestre - Vicky Hammond
- Ray Brooks - Eric Redmond
- George Sewell - Louis Scammell
- Brian Cant - Tom Storey
- Sam Kydd - Harry Poole
- Gabrielle Daye - Mrs Dowdall
- Bernard Lee - Harry Kirby
- Wanda Ventham - Peggy Kirby
- Geoffrey Bayldon - Lawrence Richie
- Richard Warwick - Donald Lamborbey
- John Harvey - Alan Hartley
- Richard Beale - Brewster
- John Ronane - Chief Insp. Tobin
- Peter Attard - Bart
- Warren Clarke - Det. Insp. Robbins
- Michael Feast - Kenny Keely
- Norma West - Fran Warren
- Tim Woodward - Det. Sgt. Hallett
- John Collin - Detective Chief Superintendent Mowbray
- John Collin - Det. Chief Supt. Mowbray
- Tim Barlow - Inspector Wisley
- John Woodnutt - Turner
- Edward de Souza - Giles Marston
- Bill Dean - Leslie Stevens
- Norman Henry - Sir James Vavasour
- Norman Henry - Salvation Army Major
- William Wilde - Freddie Paxton
- Clifton Jones - Mr. Smythe-Sekou, QC
- Michael Sheard - Mr. Justice Caldwell
- Laurence Hardy - Dr. Rowlands
- Elizabeth Adare - Mirika
- Gyearbuor Asante - Thuo Kamuni
- Oscar James - Solomon Kingsley
- Raymond Adamson - Alec Stratton
- John Bryans - Parker
- Elaine Donnelly - Annie Jackson
- Amanda Walker - Mrs. Arnold
- Brian Oulton - Coroner
- Lee Fox - Andrew Bayliss
- Wilfred Grove - James Locker
- Anthony Valentine - Zach Scholfield
- Leo Genn - Dr. Bellman
- Candace Glendenning - Clare Neale
- Gerard Glaister
Steven Berkoff interpreta a Mike Barratt en la serie.
Peter Vaughan hace el papel de Richard Toller.
Warren Clarke interpreta a Det. Insp. Robbins en la serie.
Timothy Bateson interpreta a Gregg en la serie.
Marius Goring interpreta a Dr John Hardy en la serie.
Jeremy Sinden interpreta a Price en la serie.
Virginia Stride interpreta a Susan Bartlett en la serie.
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