A dysfunctional team of MI5 agents navigate the espionage world's smoke and mirrors to defend the UK from sinister forces.
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Gary Oldman
Jackson Lamb
Jack Lowden
River Cartwright
Kristin Scott Thomas
Diana Taverner
Saskia Reeves
Catherine Standish
Christopher Chung
Roddy Ho
Aimee-Ffion Edwards
Shirley Dander
Rosalind Eleazar
Louisa Guy
Kadiff Kirwan
Marcus Longridge
Jonathan Pryce
David Cartwright
Ruth Bradley
Emma Flyte
Tom Brooke
JK Coe
Chris Reilly
Nick Duffy
Bally Gill
Agent Singh
James Callis
Claude Whelan
Samuel West
Peter Judd
Freddie Fox
James 'Spider' Webb
Naomi Wirthner
Molly Doran
Dustin Demri-Burns
Min Harper
