This series takes us into the thrilling world of M.I.5 - known to insiders simply as 'Five' - the clandestine security service, and the people who make up the eliet team. They tackle organised crime, terrorist activities, embassy sieges, weapons proliferation and anarchists, not to mention the conflicts and pwer struggles back in the office. MI-5 is a topical and edgy drama.

Full Episodes | 78

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Downton Abbey Collection

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