- Michael Grandage - Channing
- Michael J. Jackson - Easterhaus
- John Michie - Cray
- Pauline Moran - Juliet
- Tom Chadbon - Wyman
- David Walker - Guard
- Julian Curry - Admiral
- Joan Hooley - Registrar
- Lynsey Baxter - Sally
- Julie Peasgood - Lena
- Pippa Hinchley - Sarah
- Tim Wylton - Owen
- Stephen Yardley - Matt
- Adrian Pang - Tachibana
- Richard Durden - Dent
- Robert Addie - Gen. Russell
- Brett Fancy - Hex
- Rupert Bates - Bob
- Edward Jewesbury - Elverson
- Ian Gelder - Vermeer
- Rex Wei - Regent
- Michael Attwell - Moore
- Bill Leadbitter - Newsom
- Nick Miles - Dawson
- Jack McKenzie - Host
- Togo Igawa - Embassy Man
- Carl Chase - Varetsky
- Ian McNeice - Hunter
- Julie Graham - Sarita
- Anton Lesser - Patrick Marcel
- Matthew Marsh - Hurry
- Nick Brimble - Rokov
- Peter Guinness - Mackenzie
- Mark Bazeley - Vigo
- Tom Felton - James
- Naoko Mori - Melissa
- Mark Chapman - John Frost
- Robert Morgan - Roland Blatty
- William Chubb - Cottrell
- Brana Bajic - Elena
- Charlie Caine - Ballantyne
- Robin Bowerman - Storeman
- Ted Maynard - Newscaster
- Jeff Harding - Reporter
- Carmen du Sautoy - Irene
- Nick Reding - Morasco
- Matt Patresi - Ralph
- Lawrence Lambert - Guard
- John Bleasdale - Guard
- Hugh Hayes - Technician
- Ben Craze - Nurse
- Susan Kyd - Langford
- Phillip Joseph - Todd
- Antony Marsh - Kirkby
- Michael Larkin - Security
- Michael Sadler - Pilot
- Brian Deacon - Bryan
- Ric Morgan - McTiernan
- Paul Arlington - Vice-Chairman
- Wolf Christian - Security
- Roger McKern - Naval Officer
- Katia Caballero - Anna
- James Coombes - William
- George Jackos - Corelli
- Jon Cartwright - Wence
- Richard Rees - Starkey
- Steven Brough - Journalist
- Melanie Nicholson - Journalist
- Michael Feast - O'Neill
- Rachel Fielding - Davina
- Greg Hicks - Zander
- Philip McGough - Lennox
- Mark Fletcher - Glass
- John Leeson - Harris
- Bruce Barnden - Security Man
- Nickolas Grace - Charlesworth
- Raad Rawi - Da Silva
- Caroline Loncq - Kent
- Andrew Greenough - Wallace
- Bazil Otoin - Guard
- Adam Caine - Kane
- Nrinder Dhudwar - Jason
- Gareth Marks - Jean-Daniel
- Fiona Gillies - Clare
- David McAlister - Neville
- Abigail Ansell - Katie
- Jan Shepherd - Co-Pilot
- Tom Butcher - Terry
- John McGlynn - Chris
- Emma Croft - Morag
- Aedin Moloney - DeSoto
- Imogen Bain - Mrs Gardner
- Jenny Whiffen - Receptionist
- Nicholas Hope - Yerevenkian
- Philip Bowen - Simon
- Joseph May - Adam
- Milly Gregory - Carly
- William Scott-Masson - Filsinger
- Tim Barker - Spencer
- Michael Simkins - Quayle
- Martin McGlade - Carter
- Justine Francesca Glenton - Khalif
- Paul Brightwell - Zealander
- William Hoyland - Taska
- Ray Gardner - Warden
- Qarie Marshall - Gudgeon
- Tim Faraday - Vellor
- Peter Marinker - McKormac
- Conor McDermottroe - Liam
- Alexi Kaye Campbell - Grey
- David Kangas - Grant
- Shezwae Powell - Coral
- Shezwae Powell - Mrs Henderson
- Paul Kavanagh - Ryan
- Andrew Readman - Oxendale
- Peter Bourke - Rushbrook
- Virginia Denham - Bella
- Laura Heath - Controller
- Mark Webb - Patrolman
- Sandra Reinton - Christa
- Nicolas Chagrin - Cameron
- Niall Refoy - Frane
- David Hounslow - Conners
- Jason Riddington - Dr Hemmings
- Roy Holder - Raymond
- Hilary Minster - Bjorn
- Michael Parkhouse - Cooper
- Russell Mabey - Officer
- Caroline Hunnisett - Helen
- Ben Nealon - Blenco
- Andy Lucas - Diaz
- Janine Wood - Sorrel
- Chris Humphreys - Cordray
- Jona Jones - Cranleigh
- Robert Angell - Jeff
- David Durham - Sonny
- Paul Brennen - Michael
- Bill Britten - Marcus
- Valentine Pelka - Vaizey
- Jennifer Scott Malden - Tansy
- Jay Villiers - Hurry
- Glyn Grimstead - Iain
- Indra Ové - Zephyr
- Richard Heffer - Michaelson
- Barbara Horne - Mrs Michaelson
- Francesca Hall - Lesley
- Jackie Morrison - Dr Halifax
- Madhav Sharma - Chandra
- Anthony Smee - Chichester
- Christopher Naylor - Technician
- Selina Giles - Andrea
- Gwennan Sage
- Christopher King
- John Stroud
- Brian Farnham
- Ken Grieve
- Brian Grant
- Brian Clemens
- Alex Stewart
- Duncan Gould
- Stuart Doughty
- Gregory Evans
- Alison Leathart
- Colin Nicolson
Ian McNeice interpreta a Hunter en la serie.
Jan Harvey interpreta a Jan en la serie.
Jaye Griffiths interpreta a Rosalyn "Ros" Henderson en la serie.
Jesse Birdsall interpreta a Nicholas Beckett en la serie.
Steven Houghton hace el papel de Ed Russell.
Capítulo disponible en las siguientes plataformas:
