- John Rhys-Davies - Tanyatos
- Sebastian Shaw - Reverend Thomas
- Denis Holmes - Admiral Fisher
- John Hart Dyke - Pomeroy
- Howard Lew Lewis - Rowhedge
- Vic Tablian - Firsig
- Benjamin Feitelson - Sergeant Kott
- Barbara Ashcroft - Mrs. 'A'
- Dennis Chinnery - Markstein
- John Ludlow - Detective
- Vanda Godsell - Woman
- John Owens - Reporter
- Susie Fairfax - Worthing
- David Suchet - Inspector Tsientsin
- Derek Newark - General Stoessel
- Joris Stuyck - Greenberg
- Paul Williamson - Ericson
- Alex McCrindle - Macdougal
- Richard Rees - Captain Tanaka
- Richard Ireson - Tyrkov
- Richard Ridings - Vanderberg
- David Belcher - Port Official
- Jacqueline Chan - Minna
- Vincent Wong - Captain
- Andy Ho - Lee Pin
- Ric Young - Sergeant
- Anthony Chinn - Lieutenant
- Nigel Bennett - Port Official's Assistant
- David Hayman - Von Jaegar
- Bill Nighy - Goschen
- David Ryall - Glass
- Joanne Whalley - Ulla
- Bernard Gallagher - Huberhoff
- Paul Humpoletz - Von Der Helle
- Philip Bird - Muller
- Renny Krupinski - Post Office Clerk
- Timothy Block - Crane Driver
- Chris Webb - Maitland
- Diana Hardcastle - Anna
- Peter Howell - Rothschild
- Denis Lill - D'Arcy
- Colin Jeavons - Widdemeyer
- Paul Brooke - Granier
- Roger Kemp - D'Anjou
- Nancy Nevinson - Concierge
- David Millett - Sailor
- Mischa De La Motte - Waiter
- Peter Egan - Fothergill
- Geoffrey Whitehead - Lubinsky
- Antony Brown - Admiral Hall
- Roger Hume - Stubbs
- Arnold Diamond - Von Meck
- Dan Meaden - Master of Ceremonies
- Alf Joint - Head Beater
- Leo McKern - Zaharov
- Jeananne Crowley - Margaret
- John Castle - Count Massino
- Aubrey Morris - Mendrovovich
- Noel Johnson - Sir Edward Grey
- John Rapley - Servant
- John Rapley - Manservant
- Christopher Northey - Cartwright
- Jonathan Adams - British Ambassador
- Prentis Hancock - Souvorin
- Mark Brackenbury - Naval Officer
- John Malcolm - Schroeder
- Stanley Lebor - Grigorenko
- Richard Borthwick - Thompson
- Guy Deghy - Popakatoff
- Norman Comer - Thomas
- Wally Thomas - Night Porter
- George Silver - Hotel Owner
- Tony Wredden - Waiter
- Derek Smith - Count Mirbach
- David Markham - Balfour
- William Wilde - Friede
- Christopher Douglas - Alex Alexandrovich
- Alfred Molina - Blumkin
- Alec Linstead - Aide
- Shevaun Briars - Telephonist
- Richard Albrecht - Operator
- Kenneth Midwood - Banker
- Brian Protheroe - Grammaticoff
- Michael Aldridge - Orlov
- Bill Wallis - Bonch-Brouevich
- Jack Klaff - Karachan
- Celia Gregory - Nadia Massino
- Celia Gregory - Nadia
- Jan Chappell - Marie Friede
- Barry Stokes - Cromie
- Sara Clee - Fanya Kaplan
- Jude Alderson - Lisveta
- Alan Downer - Berzin
- Judy Elrington - Elena Petrovna
- Anna Nygh - Moura
- Victoria Harwood - Natalia
- Jon Laurimore - Tykkhon
- Frank Baker - Smidchen
- Jeff Stewart - Jenkins
- Bill McCabe - Chairman
- Michael Mears - Duty Officer / Guard
- Ned Vukovic - Guard
- Fred Lee Own - Worker
- Roy Pattison - Worker
- Peter Silverleaf - Guard
- Lindsay Duncan - Alexandra
- Kenneth Cranham - Lenin
- Ian Charleson - Lockhart
- Clifford Rose - Cecil
- Robert Walker - Adamson
- Rupert Frazer - Leeper
- Bill Gavin - Timkins
- Bogdan Kominowski - Peters
- Edward Kelsey - Prosecutor
- Robert Lankesheer - Attendant
- Virginia Greig - Deb
- Jim Dunk - Freight Clerk
- Eleanor David - Eugenie
- Caroline Hutchison - Maria Plevitskaya
- Meg Davies - Mamie Daerenthal
- David Lyon - Dichter Daerenthal
- Forbes Collins - Monkewitz
- Heather Canning - Madame Chinova
- Kathleen Byron - Madame Savinkova
- Michael O'Hagan - Dougherty
- Morris Perry - Chairman
- Jerry Harte - Nobel
- Gordon Sterne - Ford
- Nicholas Gecks - Skoblin
- Kenneth Nelson - Auctioneer
- Richard LeParmentier - FBI Agent
- Alan Bowerman - Lieberman
- Jacob Witkin - Ships Officer
- Roy Heather - Karl
- Dennis Creaghan - American Hotel Receptionist
- Joel Cutrara - Interrogator
- Clive Merrison - Savinkov
- Warren Clarke - Yakushev
- Tusse Silberg - Maria Schulz
- Rob Heyland - Georgi
- Frances Barber - Dagmara
- Peter Godfrey - Opperput
- Stephen Frost - Styrne
- Royston Tickner - General Alexei
- William Sleigh - Kyrilov
- George Malpas - Tobacconist
- Phil Smeeton - Chekist
- Norman Rodway - Cummings
- Tom Bell - Dzerzhinsky
- Hugh Fraser - Hill
- Joanne Pearce - Caryll Houselander
- Malcolm Terris - Sykes
- Laura Davenport - Pepita
- Anthony Higgins - Trilisser
- David Burke - Stalin
- Donald Morley - Baldwin
- John Bluthal - Krassin
- Michael Angelis - Artuzov
- Joan Campion - Sister
- Jeremy Wilkin - Doctor
- James Coyle - Gunman
- Janet Henfrey - Receptionist
- Michael Worsley - Torturer
- Nick Burnell - Warder
- Robert Lee - Admiral Togo
- Michael Bryant - Narrator (voice)
- Troy Kennedy Martin
- Robin Bruce Lockhart
Bill Nighy interpreta a Goschen en la serie.
John Rhys-Davies hace el papel de Tanyatos.
Alfred Molina interpreta a Blumkin en la serie.
Anthony Higgins interpreta a Trilisser en la serie.
Vic Tablian interpreta a Firsig en la serie.
Warren Clarke interpreta a Yakushev en la serie.
Aubrey Morris interpreta a Mendrovovich en la serie.
Sam Neill interpreta a Sidney Reilly en la serie.
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