Peter Firth
Harry Pearce (10 eps)
Keeley Hawes
Zoe Reynolds (10 eps)
David Oyelowo
Danny Hunter (10 eps)
Shauna Macdonald
Sam Buxton (10 eps)
Matthew Macfadyen
Tom Quinn (10 eps)
Todd Boyce
Troy (1 eps)
Annabelle Apsion
Bridget Sands (1 eps)
John Salthouse
James Crowe (1 eps)
Alexander Siddig
Ibhn Khaldun (1 eps)
Santiago Cabrera
Camilo Henriquez (1 eps)
Reece Dinsdale
Major Sam Curtis (1 eps)
Benedict Cumberbatch
Jim North (1 eps)
Adam Deacon
Billy (1 eps)
Bruce Payne
Michael Kaharias (1 eps)
Julie Cox
Maxi Baxter (1 eps)
Lorcan Cranitch
Patrick McCann (1 eps)
Rez Kempton
Aaqil (1 eps)
Heshima Thompson
JJ (1 eps)
Daniel Cerqueira
Rafael Morientes (1 eps)
Emma Barton
MI5 Officer (1 eps)
John Hopkins
Anton (1 eps)
Sophie Okonedo
Amanda Roke (1 eps)
Kieran Bew
Bryant (1 eps)
Qarie Marshall
Mohammed Rachid (1 eps)
Jo Joyner
Stephanie Mills (1 eps)
Michael Hodgson
Derek Hanson (1 eps)
Oliver Ford Davies
Sir Richard 'Dickie' Bowman (1 eps)
Augustus Prew
Peter Ellis (1 eps)
Karel Roden
Miroslav Gradic (1 eps)
Christopher Fairbank
Gordon Blaney (1 eps)
Peter McDonald
Tim Prachett (1 eps)
Jack Doolan
Jason Sweeney (1 eps)
Rade Šerbedžija
Viktor Schvitkoy (1 eps)
Rad Lazar
Gradic Henchman (1 eps)
Martin Cole
SAS Officer (1 eps)
Teresa Churcher
Sarah (1 eps)