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The Security Service, also MI5 (Military Intelligence, Section 5),〔"(What's in a name? )" MI5. Retrieved 14 May 2014.〕 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). MI5 is directed by the Joint Intelligence Committee (JIC), and the service is bound by the Security Service Act 1989 and the Intelligence Services Act 1994. The service is directed to protect British parliamentary democracy and economic interests, and counter terrorism and espionage within the UK. Within the civil service community the service is colloquially known as ''Box 500'' (after its official wartime address of PO Box 500; its current address is PO Box 3255, London SW1P 1AE).〔Timothy Gerraty, ''The Irish War''.〕 The service has had a national headquarters at Thames House on Millbank in London since 1995, drawing together personnel from a number of locations into a single HQ facility. Thames House was, until March 2013, shared with the Northern Ireland Office (NIO) and is also home to the Joint Terrorism Analysis Centre, a subordinate organisation to the Security Service. The service has offices across the United Kingdom including an HQ in Northern Ireland. Details of the northern operations centre in Greater Manchester were revealed by the firm who built it. Plans to open the northern operations centre were reported by ''The Manchester Evening News'' in February 2005, and plans to open a permanent Scottish office in Glasgow were reported by ''The Scotsman'' in January of that year. ==Organisation== The Security Service comes under the authority of the Home Secretary within the Cabinet.〔Security Service Act of 1989.〕 The service is headed by a Director General at the grade of a Permanent Secretary of the British Civil Service who is directly supported by an internal security organisation, secretariat, legal advisory branch and information services branch. The Deputy DG is responsible for the operational activity of the service, being responsible for four branches; international counter-terrorism, National Security Advice Centre (counter proliferation and counter espionage), Irish and domestic counter-terrorism and technical and surveillance operations. The service is directed by the Joint Intelligence Committee 〔Intelligence Services Act 1994.〕 for intelligence operational priorities and liaises with the SIS, GCHQ, DIS and a number of other bodies within the British government and industrial base. The service is overseen by the Intelligence and Security Committee of Members of Parliament, directly appointed by the Prime Minister, and by the Interception of Communications Commissioner and the Intelligence Services Commissioner. Judicial oversight of the service's conduct is exercised by the Investigatory Powers Tribunal. Operations of the service are required to be proportionate and compliant with British legislation including Regulation of Investigatory Powers Act 2000, Data Protection Act 1998 and various other items of legislation. Information held by the service is exempt from disclosure under section 23 of the Freedom of Information Act 2000.〔(【引用サイトリンク】 Freedom of Information Act, section 23 )〕 A draft to the Investigatory Powers Act 2000 was put before parliament on the 4th of November 2015. 〔UK Parliament Website - (Statement on Draft Investigatory Powers Bill: 4 November 2015 ) published 04 November 2015 (2015-11-06 )〕 All employees of the service are bound by the Official Secrets Act.〔R. Leach, W. Coxall, L. Robin - (British Politics, p.341 ) ''Palgrave Foundations Series'', Palgrave Macmillan 17 Aug 2011 (revised), 480 pages, ISBN 0230344224 Retrieved 2015-07-11〕 The current Director General is Andrew Parker, who succeeded Jonathan Evans on 22 April 2013. The service has marked its centenary in 2009 by publishing an official history, written by Christopher Andrew, Professor of Modern and Contemporary History at Cambridge University.〔(MI5 | 1990 to Present )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「MI5」の詳細全文を読む スポンサード リンク
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