Defend the Realm: The Authorized History of MI5 by Christopher Andrew is one such tome.
Few of the people in MI6 or MI5, the counterintelligence service, would divulge anything at all.
Arthur Owens spent years in exile, reviled as a Nazi spy, but he actually was a double agent working with MI5.
At the start of the war, on the orders of his Soviet handler, he successfully “coat trailed” his way into MI5.
Are you unaware of the role agent provocateurs, special branch and MI5 have played in undermining us?
At Risk By Stella Rimington The first novel by the best spy storyteller today, the former head of MI5.
That would be the perfect complement to it for your MI5 library.
MI5 focuses on domestic threats; MI6 is the British equivalent of the CIA.
1939, from abbreviation of Military Intelligence, followed by the department number.