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Lucas North

Full Name: Lucas North

Occupation: Senior Case Officer

Joined MI5: 1992

After eight years in a Russian prison, Lucas was welcomed back by MI5 supremo and old friend, Harry, who was instrumental in finally securing his release. Lucas' loyalty was initially called into question and he had to prove himself to the rest of the team. Now a key member of Section D, Lucas is undoubtedly a brilliant spy, but after everything he's been through, has he really put the past behind him?

Richard Armitage

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Richard became the object of many a woman's desire with his sizzling portrayal of John Thornton in North & South.

His most famous role to date is as Sir Guy of Gisborne in Robin Hood. He was a regular in the fifth series of Cold Feet, and starred alongside Brenda Blethyn and Alun Armstrong in Between The Sheets.

Richard has guest-starred in The Vicar of Dibley, Doctors, Casualty and The Inspector Lynley Mysteries. Richard is also starring in Strike Back, an adaptation of ex-SAS soldier Chris Ryan's novel.