Characters played by Daniel Ryan
DAC Peter Clarke
Characters played by Richard Pepper
Duncan Ball
Characters played by Sarah Naudi
Justine Adams
Characters played by Radoslaw Kaim
Andrei Lugovoy
Characters played by Greg Kolpakchi
Oscar Enrique
Characters played by Maggie Evans
Pat Troop (2022)
Characters played by Sam Marks
DC Oliver Gadney
Characters played by Paul Riddell
Diplomat
Characters played by Simon Haines
Benjamin Swift
Characters played by Mitya Savelau
Concierge
Characters played by Nikolai Tsankov
Boris Berezovsky (2021)
Characters played by David Tennant
Alexander Litvinenko
Characters played by Margarita Levieva
Marina Litvinenko
Characters played by Mark Bonnar
Clive Timmons
Characters played by Neil Maskell
Brent Hyatt