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MI5 (Military Intelligence, Section 5), [2] officially the Security Service, is the United Kingdom's domestic counter-intelligence and security agency and is part of its intelligence machinery alongside the Secret Intelligence Service (MI6), Government Communications Headquarters (GCHQ), and Defence Intelligence (DI).
The Director General of the Security Service is the head of the Security Service (commonly known as MI5), the United Kingdom's internal counter-intelligence and security agency. The Director General is assisted by a Deputy Director General and an Assistant Director General, and reports to the Home Secretary , although the Security Service is ...
The Defence of the Realm: The Authorized History of MI5, published in the United States as Defend the Realm, is an authorised history of the British Security Service (MI5), written by historian Christopher Andrew. Andrew was commissioned in December 2002 to write the history for MI5's 100th anniversary in 2009.
Michael John Bettaney (13 February 1950 – 16 August 2018), [1] also known as Michael Malkin, was a British intelligence officer who worked in the counter-espionage branch of the Security Service often known as MI5.
Major General Sir Vernon George Waldegrave Kell, KBE, CB (21 November 1873 – 27 March 1942) was a British Army general and the founder and first Director of the British Security Service, otherwise known as MI5.
Thomas Argyll Robertson OBE (27 October 1909 – 10 May 1994), known as "Tommy" or by his initials as "TAR", was a Scottish MI5 intelligence officer responsible during the Second World War for the "Double-Cross" ("XX") disinformation campaign against the German intelligence services.
Graham Russell Mitchell OBE, CB (4 November 1905 – 19 November 1984), was an officer of MI5, the British Security Service, between 1939 and 1963, serving as its deputy director general between 1956 and 1963.
Jonathan Douglas Evans, Baron Evans of Weardale, KCB, DL (born 17 February 1958) is a British life peer who formerly served as the Director General of the British Security Service, the United Kingdom's domestic security and counter-intelligence service.