Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation. The title is a popular colloquialism for spies, and the series follows the work of a group of MI5 officers based at the service's Thames House headquarters, in a highly secure suite of offices known as The Grid.
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Peter Firth
Harry Pearce
Nicola Walker
Ruth Evershed
Max Brown
Dimitri Levendis
Lara Pulver
Erin Watts
William Hope
Jim Coaver
Alex Lanipekun
Ben Kaplan
Geoffrey Streatfeild
Calum Reed
Tom Weston-Jones
Sasha Gavrik
Alice Krige
Elena Gavrik
Jonathan Hyde
Ilya Gavrik
6 eps
Series 1
2002
10 eps
Series 2
2003
10 eps
Series 3
2004
10 eps
Series 4
2005
10 eps
Series 5
2006
10 eps
Series 6
2007
8 eps
Series 7
2008
8 eps
Series 8
2009
8 eps
Series 9
2010
6 eps
Series 10
2011
Status
Ended
Original Language
EN
Network
BBC One
Tagline
"It's a fine line between safety and terror. Meet the rulers."
Created By
David Wolstencroft
Production
BBC, Kudos
Where to Watch
Stream
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