- Keira Knightley Katharine Gun
- Matt Smith Martin Bright
- Matthew Goode Peter Beaumont
- MyAnna Buring Jasmine
- Ralph Fiennes Ben Emmerson
- Rhys Ifans Ed Vulliamy
- Indira Varma Shami Chakrabarti
- Conleth Hill Roger Alton
- Tamsin Greig Elizabeth Wilmshurst
- Adam Bakri Yasar Gun
- Shaun Dooley John
- Hattie Morahan Yvonne Ridley
- Kenneth Cranham Juez Hyam
- Ray Panthaki Kamal Ahmed
- John Heffernan James Welch
- Clive Francis Rear Admiral Nick Wilkinson
- Katherine Kelly Jacqueline Jones
- Jeremy Northam
- Monica Dolan Fiona Bygate
Cinemanía > Películas > Secretos de estado > Reparto