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MI5



 
 
For other uses, see MI-5
MI-5

MI-5 may refer to* MI5, Security Service of the United Kingdom* MI-05, U.S. state of Michigan, 5th congressional district* MI-5 ...
.


The Security Service, commonly known as MI5 (Military Intelligence, Section 5), is the United Kingdom's
United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom , the UK or Britain,is a sovereign state located off the northwestern coast of continental Europe....
 counter-intelligence
Counter-intelligence

Intelligence cycle management, and, by extension, the overall defenses of nations, are vulnerable to attack. It is the role of intelligence cycle security to protect the process embodied in the intelligence cycle, and that which it defends....
 and security agency
Security agency

A security agency is an organization which conducts intelligence activities for the internal security of a nation, state or organization. They are the domestic cousins of foreign Intelligence agency....
 and is part of the intelligence machinery alongside the Secret Intelligence Service
Secret Intelligence Service

The Secret Intelligence Service , colloquially known as MI6 is the United Kingdom's external intelligence agency, part of the country's United Kingdom intelligence community....
 (SIS or MI6), Government Communications Headquarters
Government Communications Headquarters

The Government Communications Headquarters is a United Kingdom intelligence agency responsible for providing signals intelligence and information assurance to the Her Majesty's Government and British Armed Forces as required, under the guidance of the Joint Intelligence Committee ....
 (GCHQ) and the Defence Intelligence Staff
Defence Intelligence Staff

The Defence Intelligence Staff is an element of the United Kingdom's Ministry of Defence and is primarily responsible for providing intelligence assessments and advice to support military operations and to guide MOD decisions on defence policy and procurement....
 (DIS). All come under the direction of the Joint Intelligence Committee
Joint Intelligence Committee

The Joint Intelligence Committee is a nodal government agency in several countries, responsible for the internal and external security apparatus of the respective nations....
 (JIC). The service has a statutory basis in the Security Service Act 1989 and the Intelligence Services Act 1994.






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Encyclopedia


For other uses, see MI-5
MI-5

MI-5 may refer to* MI5, Security Service of the United Kingdom* MI-05, U.S. state of Michigan, 5th congressional district* MI-5 ...
.


The Security Service, commonly known as MI5 (Military Intelligence, Section 5), is the United Kingdom's
United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom , the UK or Britain,is a sovereign state located off the northwestern coast of continental Europe....
 counter-intelligence
Counter-intelligence

Intelligence cycle management, and, by extension, the overall defenses of nations, are vulnerable to attack. It is the role of intelligence cycle security to protect the process embodied in the intelligence cycle, and that which it defends....
 and security agency
Security agency

A security agency is an organization which conducts intelligence activities for the internal security of a nation, state or organization. They are the domestic cousins of foreign Intelligence agency....
 and is part of the intelligence machinery alongside the Secret Intelligence Service
Secret Intelligence Service

The Secret Intelligence Service , colloquially known as MI6 is the United Kingdom's external intelligence agency, part of the country's United Kingdom intelligence community....
 (SIS or MI6), Government Communications Headquarters
Government Communications Headquarters

The Government Communications Headquarters is a United Kingdom intelligence agency responsible for providing signals intelligence and information assurance to the Her Majesty's Government and British Armed Forces as required, under the guidance of the Joint Intelligence Committee ....
 (GCHQ) and the Defence Intelligence Staff
Defence Intelligence Staff

The Defence Intelligence Staff is an element of the United Kingdom's Ministry of Defence and is primarily responsible for providing intelligence assessments and advice to support military operations and to guide MOD decisions on defence policy and procurement....
 (DIS). All come under the direction of the Joint Intelligence Committee
Joint Intelligence Committee

The Joint Intelligence Committee is a nodal government agency in several countries, responsible for the internal and external security apparatus of the respective nations....
 (JIC). The service has a statutory basis in the Security Service Act 1989 and the Intelligence Services Act 1994. Its remit includes the protection of British parliamentary democracy
Democracy

Democracy is a form of government in which power is held directly or indirectly by citizens under a free electoral system. It is derived from the Greek language d?????at?a , "popular government" which was coined from d???? , "people" and ???t?? , "rule, strength" in the middle of the 5th-4th century BC to denote the political syst...
 and economic interests, counter-terrorism
Counter-terrorism

Counter-terrorism refers to the practices, Military tactics, techniques, and strategies that governments, military, police departments and corporations adopt in response to terrorism, both real and imputed....
 and counter-espionage within the UK. While mainly concerned with internal security
Internal security

Internal security, or IS, is the act of keeping domestic peace within a country. It is often carried out by police, government personnel, specialized military or paramilitary forces who may be armed with lethal or less than lethal weapons....
, it does have an overseas role in support of its mission. Conversely, to ensure that the Home Secretary is responsible for intelligence operations within the UK, the Service may act on behalf of SIS and GCHQ even if the operation is outside its own functions (SIS and GCHQ report to the Foreign Secretary).

The service has had a national headquarters at Thames House
Thames House

Thames House is an office development in Millbank, London on the bank of the River Thames adjacent to Lambeth Bridge. It has served as the headquarters of the United Kingdom MI5, commonly known as MI5, since December 1994....
 on Millbank
Millbank

Millbank is an area of central London in the City of Westminster. Millbank is located by the River Thames, east of Pimlico and south of Westminster....
 in London
London

London is the capital of both England and the United Kingdom, and the most populous municipality in the European Union. An important settlement for two millennia, History of London goes back to its founding by the Roman Empire....
 since 1995, drawing together personnel from a number of locations into a single HQ facility. Thames House is shared with the Northern Ireland Office
Northern Ireland Office

The Northern Ireland Office is a United Kingdom government department responsible for Northern Ireland affairs. The NIO is led by the Secretary of State for Northern Ireland, currently Shaun Woodward MP supported by Paul Goggins MP....
 and is also home to the Joint Terrorism Analysis Centre
Joint Terrorist Analysis Centre

The Joint Terrorism Analysis Centre is an all source Intelligence agency closely related to the United Kingdom MI5 which provides advice to the United Kingdom government and firms within the Critical National Infrastructure on Terrorism threat....
, a subordinate organisation to the Security Service. It has been alleged that the Service has regional facilities with one claimed to be in Glasgow
Glasgow

Glasgow is the largest city in Scotland and List of largest United Kingdom settlements by population in the United Kingdom. The city is situated on the River Clyde in the country's Scottish Lowlands....
. 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
London SW1

SW1 is a UK postcodes in the SW postcode area of London, England....
 1AE).

Command, control and organisation

The Security Service comes under the authority of the Home Secretary within the Cabinet
Cabinet of the United Kingdom

In the politics of the United Kingdom, the Cabinet is a formal body composed of the most senior Her Majesty's Governmentminister chosen by the Prime Minister of the United Kingdom....
.

The service is headed by a Director General at the grade of a Permanent Secretary
Permanent Secretary

The Permanent Secretary, in most departments officially titled the Permanent Under-Secretary of State , is the most senior British Civil Service of a Her Majesty's Government Ministry , charged with running the department on a day-to-day basis....
 of the British Civil Service
British Civil Service

Her Majesty's Civil Service, also known as the Home Civil Service, is the permanent bureaucracy of Crown employees that supports Government of the United Kingdom and the devolved administrations in Welsh Assembly Government and Scottish Government....
 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 subject to the direction of the Joint Intelligence Committee 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
Prime Minister of the United Kingdom

The Prime Minister of the United Kingdom of Great Britain and Northern Ireland is the political leader of the United Kingdom and the head of government Her Majesty's Government....
. Judicial oversight is also vested in the Interception of Communications Commissioner and the Intelligence Services Commissioner.

Operations of the service are required to be proportionate and compliant with British legislation including Regulation of Investigatory Powers Act 2000
Regulation of Investigatory Powers Act 2000

The Regulation of Investigatory Powers Act 2000 is an Act of Parliament of the Parliament of the United Kingdom, regulating the powers of public bodies to carry out surveillance and investigation, and covering the interception of Telecommunication....
, 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
Freedom of Information Act 2000

The Freedom of Information Act 2000 is an Act of Parliament of the Parliament of the United Kingdom. It is the implementation of freedom of information legislation in the United Kingdom on a national level....
.

The current Director General is Jonathan Evans
Jonathan Evans (MI5 officer)

Jonathan Evans is Director General of MI5 of the MI5, the United Kingdom domestic security and counter-intelligence service. He took over the role on the retirement of his predecessor Dame Eliza Manningham-Buller on 21 April, 2007....
, who succeeded Dame
Dame (title)

Dame is the female equivalent of address to Sir for a United Kingdom knighthood. In the UK honours system, this can be the title of a woman who has been made a Dame Commander or Dame Grand Cross of the Order of the Bath, Order of St Michael and St George, Royal Victorian Order, or Order of the British Empire....
 Eliza Manningham-Buller
Eliza Manningham-Buller

Elizabeth Lydia Manningham-Buller, Baroness Manningham-Buller Order of the Bath was Director general of MI5 of MI5, the United Kingdom internal national security agency, from October 2002 until her retirement on 20 April 2007, aged 58....
 on 8 April 2007.

The service will mark its centenary in 2009 by publishing an official history, to be written by Professor Christopher Andrew
Christopher Andrew

Christopher Maurice Andrew, PhD is a historian at the University of Cambridge with a special interest in international relations and in particular the history of intelligence services....
, Professor of Modern and Contemporary History at Cambridge University
University of Cambridge

The University of Cambridge , located in Cambridge, England, is the List of oldest universities in continuous operation university in the Anglosphere....
, to be published in hardback in 2009 by Allen Lane, an imprint of Penguin Books
Penguin Books

Penguin Books is a United Kingdom publisher founded in 1935 by Allen Lane. Lane's idea was to provide quality writing cheaply, for the same price as a pack of cigarettes....
.

History


Early years

The Security Service is derived from the Secret Service Bureau, founded in 1909 in a national climate of pre-war paranoia and possibly influenced by invasion literature
Invasion literature

Invasion literature was a historical literary genre most notable between 1871 and the World War I . The genre first became recognizable starting in United Kingdom of Great Britain and Ireland in 1871 with The Battle of Dorking, a fictional account of an invasion of England by Germany....
, William Le Queux among others, to control secret intelligence operations in the UK and overseas, particularly concentrating on the activities of the Imperial German government as a joint initiative of the Admiralty
Admiralty

The Admiralty was formerly the authority in the United Kingdom responsible for the command of the Royal Navy. Originally exercised by a single person, the office of Lord High Admiral was from the 18th century onward almost invariably put "in commission", and was exercised by a Board of Admiralty....
 and the War Office
War Office

The War Office was a former department of the British Government, responsible for the administration of the British Army between the 17th century and 1963, when its functions were transferred to the Ministry of Defence ....
. The Bureau was split into naval and army sections which, over time, specialised in foreign target espionage and internal counter-espionage activities respectively. This specialisation was a result of the Admiralty intelligence requirements related to the maritime strength of the Imperial German Navy. This specialisation was formalised prior to 1914 and the opening of World War I
World War I

World War I, or the First World War , was a global military conflict which involved the Great powers, organized into two opposing military alliances: the Allies of World War I and the Central Powers....
, with the two sections undergoing a number of administrative changes and the home section becoming Directorate of Military Intelligence
Directorate of Military Intelligence

The Directorate of Military Intelligence was a department of the United Kingdom War Office until that was subsumed into the Ministry of Defence in 1964....
 Section 5 (MI5), the name by which it is known in popular culture to this very day.

The founding head of the Army section was Captain Vernon Kell
Vernon Kell

Major-General Sir Vernon George Waldegrave Kell, Order of the British Empire was the founder and first Director general of MI5 of the United Kingdom Security Service, otherwise known as MI5....
 of the South Staffordshire Regiment, who remained in that role until the early part of the Second World War. Its role was originally quite restricted; existing purely to ensure national security through counter-espionage. With a small staff and working in conjunction with the Special Branch
Special Branch

Special Branch is an investigative unit of the Policing in the United Kingdom and other Commonwealth of Nations police services, as well as Ireland's Garda S?och?na....
 of the Metropolitan Police
Metropolitan Police Service

The Metropolitan Police Service is the territorial police force responsible for law enforcement within Greater London, excluding the City of London which is the responsibility of a City of London Police....
, the service was responsible for overall direction and the identification of foreign agents, whilst Special Branch provided the manpower for the investigation of their affairs, arrest and interrogation.

Founded in a climate of hysteria over an alleged huge German spy network, the service was successful, against admittedly weak opposition, prior to the war. The service identified a total of 22 agents, 21 of whom were interned at the start of the war, following a period of covert surveillance. This strategy was adopted based on the assessment that agents apprehended would likely be replaced, their identities unknown to the service. Predicated on the ability of the service to quickly apprehend the suspects, success was assured by providing Kell twelve hours' notice of the outbreak of war. The arrests deprived Germany completely of reliable intelligence from within Britain.

Inter-war period

After this auspicious start, the history of MI5 becomes darker. It was consistently successful throughout the rest of the 1910s and the 1920s in its core counter-espionage role. Germany continued to attempt to infiltrate Britain throughout the war, but using a method that depended on strict control of entry and exit to the country and, crucially, large-scale inspection of mail, MI5 was able to identify most, if not all, the agents dispatched. In post-war years attention turned to attempts by the Soviet Union
Soviet Union

The Union of Soviet Socialist Republics was a Constitution of the Soviet Union socialist state that existed in Eurasia from 1922 to 1991.The name is a translation of the , romanization of Russian Soyuz Sovetskikh Sotsialisticheskikh Respublik, abbreviated ????, SSSR....
 and the Comintern
Comintern

The 'Comintern' was an international Communism organization founded in Moscow in March 1919. The International intended to fight "by all available means, including armed force, for the overthrow of the international bourgeoisie and for the creation of an international Soviet republic as a transition stage to the complete abolition of the Sta...
 to surreptitiously support revolutionary activities within Britain, and MI5's expertise combined with the early incompetence of the Soviets meant the bureau was successful once more in correctly identifying and closely monitoring these activities.

However, in the meantime MI5's role had been substantially enlarged. Due to the spy hysteria, MI5 was formed with far more resources than it actually needed to track down German spies. As is common within governmental bureaucracies, this meant it expanded its role in order to use its spare resources. MI5 acquired many additional responsibilities during the war. Most significantly, its strict counter-espionage role was considerably blurred. It became a much more political role, involving the surveillance not merely of foreign agents but of pacifist
Pacifism

Pacifism is the opposition to war or violence as a means of settling disputes or gaining advantage. Pacifism covers a spectrum of views ranging from the belief that international disputes can and should be peacefully resolved; to calls for the abolition of the institutions of the military and war; to opposition to any organization of society...
 and anti-conscription
Conscription

Conscription is a general term for involuntary labor demanded by an established authority. It is most often used in the specific sense of government policies that require citizens to serve in the military....
 organisations, and organised labour. This was justified on the basis of the common (but mistaken) belief that foreign influence was at the root of these organisations. Thus by the end of the war, MI5 was a fully-fledged secret police (although it never had the powers of arrest), in addition to being a counter-espionage agency.

This expansion of its role has continued, after a brief post-war power struggle with the head of the Special Branch
Special Branch

Special Branch is an investigative unit of the Policing in the United Kingdom and other Commonwealth of Nations police services, as well as Ireland's Garda S?och?na....
, Sir
Knight Bachelor

The rank of Knight Bachelor is a part of the British honours system. It is the rank of a man who has been knighted by the monarch but not as a member of one of the organised Chivalric order....
 Basil Thomson
Basil Thomson

Sir Basil Home Thomson, Order of the Bath was a United Kingdom intelligence officer, police officer, prison governor, colonial administrator, and writer....
. MI5 also managed to acquire responsibility for security operations not only in Great Britain but throughout the British Empire
British Empire

The British Empire comprised the dominions, Crown colony, protectorates, League of Nations mandate, and other Dependent territory ruled or administered by the United Kingdom , that had originated with the overseas colonies and trading posts established by England in the late 16th and early 17th centuries....
, and with the decline in the Empire the Security Officers based in the British High Commissions returned to London and joined the Service, which gave it a significant role in Ireland
Ireland

Ireland is the List of islands by area in Europe, and the twentieth-largest island in the world. It lies to the north-west of continental Europe and is surrounded by hundreds of islands and islet....
. MI5 now has a role similar to that of the United States
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
' Federal Bureau of Investigation
Federal Bureau of Investigation

The Federal Bureau of Investigation is the primary unit in the United States United States Department of Justice, serving as both a Law enforcement agency body and a domestic intelligence agency....
, if not as extensive, which includes crime-prevention activities as well as political surveillance and counter-espionage. This expansion had happened almost entirely without supervision; MI5 had no responsibility to Parliament
Parliament of the United Kingdom

The Parliament of the United Kingdom of Great Britain and Northern Ireland is the supreme legislature in the United Kingdom and British overseas territories....
, and was often able to act with considerable independence even from the Cabinet
Cabinet of the United Kingdom

In the politics of the United Kingdom, the Cabinet is a formal body composed of the most senior Her Majesty's Governmentminister chosen by the Prime Minister of the United Kingdom....
 and Prime Minister
Prime Minister of the United Kingdom

The Prime Minister of the United Kingdom of Great Britain and Northern Ireland is the political leader of the United Kingdom and the head of government Her Majesty's Government....
. Since 1994, MI5 activities have been subject to scrutiny by Parliament's Intelligence and Security Committee
Intelligence and Security Committee

The Intelligence and Security Committee is a committee of parliamentarians appointed by the Prime Minister of the United Kingdom to oversee the work of the Intelligence machinery of the United Kingdom....
.

MI5's Irish operations during the Anglo-Irish War were an unmitigated
Cairo Gang

The "Cairo Gang" was a group of British Intelligence agents who were sent to Dublin during the Anglo-Irish War to conduct intelligence operations against prominent members of the Irish Republican Army....
 disaster. Its operation was penetrated by the Irish Republican Army
Irish Republican Army

The Irish Republican Army was an Irish republican revolutionary military organisation descended from the Irish Volunteers, established 25 November 1913 and who in April 1916 staged the Easter Rising....
, and even before Michael Collins
Michael Collins (Irish leader)

Michael John Collins was an Ireland revolutionary leadership, Minister for Finance and Member of Parliament for South Cork in the First D?il of 1919, Director of Military intelligence for the Irish Republican Army, and member of the Irish delegation during the Anglo-Irish Treaty negotiations....
 ordered a ruthless purge of MI5's Irish agents—almost all of whom were assassinated—it was unable to provide useful intelligence on the Irish republican movement during the Home Rule
Home rule

Home rule refers to a demand that constituent parts of a state be given greater self-governance within the greater administrative purview of the central government....
 and independence controversies.

MI5's decline in counter-espionage efficiency began in the 1930s. It was to some extent a victim of its own success; it was unable to break the ways of thinking it had evolved in the 1910s and 1920s, in particular, to adjust to the new methods of the NKVD
NKVD

The NKVD or People's Commissariat for Internal Affairs was the leading secret police organization of the Soviet Union that was responsible for Soviet political repressions during the Stalinism era....
, the Russian secret intelligence organisation (later KGB
KGB

KGB is the Russian language abbreviation of Committee for State Security , which was the official name of the umbrella organization serving as the Soviet Union's premier security agency, secret police, and intelligence agency, from 1954 to 1991....
). It continued to think in terms of agents who would attempt to gather information simply through observation or bribery, or to agitate within labour organisations or the armed services, while posing as ordinary citizens.

The NKVD, however, had evolved more sophisticated methods; it began to recruit agents from within the Establishment, most notably from Cambridge University
University of Cambridge

The University of Cambridge , located in Cambridge, England, is the List of oldest universities in continuous operation university in the Anglosphere....
, who were seen as a long-term investment. They succeeded in gaining positions within the Government (and, in Kim Philby's case, within British intelligence itself), from where they were able to provide the NKVD with sensitive information. The most successful of these agents—Harold 'Kim' Philby
Kim Philby

Harold Adrian Russell "Kim" Philby or H.A.R. Philby , was a high-ranking member of British military intelligence. A socialism, he served as an NKVD and KGB operative....
, Donald Maclean
Donald Duart Maclean

Donald Duart Maclean was a British diplomat, and after having been recruited as a straight penetration agent while still an undergraduate at Cambridge University, by the Soviet intelligence service, was one of the Cambridge Five, members of MI5, MI6 or the diplomatic service who acted as spy for the Soviet Union in the Second World War an...
, Guy Burgess
Guy Burgess

Guy Francis De Moncy Burgess was a United Kingdom-born intelligence officer and double agent, who worked for the Soviet Union. He was part of the Cambridge Five spy ring that betrayed Western secrets to the Soviets before and during the Cold War....
, Anthony Blunt
Anthony Blunt

Anthony Frederick Blunt , known as Sir Anthony Blunt, Royal Victorian Order between 1956 and 1979, was a British spy, art history, formerly Professor of the History of Art, University of London and director of the Courtauld Institute of Art, London ....
 and John Cairncross
John Cairncross

John Cairncross was a United Kingdom intelligence officer during World War II who passed secrets to the Soviet Union during the war. He was alleged to be the fifth member of the Cambridge Five....
—went undetected until after the Second World War, and were known as the Cambridge Five
Cambridge Five

The Cambridge Five was a ring of Soviet espionage in the UK who passed information to the Soviet Union during World War II and into the early 1950s....
. See also Melita Norwood
Melita Norwood

Melita Norwood, n?e Sirnis, was a United Kingdom civil servant and KGB intelligence source who, for a period of about 40 years following her recruitment in 1937, supplied the KGB with state secrets from her job at the British Non-Ferrous Metals Research Association , including the schematics for the British nuclear weapon in 1945....
 and Klaus Fuchs
Klaus Fuchs

Klaus Emil Julius Fuchs , was a German-born British theoretical physics and Atomic Spies who was convicted of supplying information from the British and American atomic bomb research to the Soviet Union during, and shortly after, World War II....
.

Second World War

Thames House   Millbank Entrance   London
MI5 experienced further failure during the Second World War. It was chronically unprepared, both organisationally and in terms of resources, for the outbreak of war, and utterly unequal to the task which it was assigned—the large-scale internment of enemy aliens in an attempt to uncover enemy agents. The operation was badly mishandled and contributed to the near-collapse of the agency by 1940.

One of the earliest actions of Winston Churchill
Winston Churchill

Sir Winston Leonard Spencer-Churchill, Order of the Garter, Order of Merit, Order of the Companions of Honour, Territorial Decoration, Fellow of the Royal Society, Her Majesty's Most Honourable Privy Council, Queen's Privy Council for Canada was a Politics of the United Kingdom known chiefly for his leadership of the United King...
 on coming to power in early 1940 was to sack the agency's long-term head, Vernon Kell. He was replaced initially by the ineffective Brigadier A.W.A. Harker, as Acting Director General. Harker in turn was quickly replaced by David Petrie
David Petrie

Sir David Petrie, Order of the Bath was Director general of MI5 of MI5, the United Kingdom's internal security service, from 1941 to 1946. He was described as "a rugged and kindly Scot, with...immense physical and moral strength"...
, an SIS
Secret Intelligence Service

The Secret Intelligence Service , colloquially known as MI6 is the United Kingdom's external intelligence agency, part of the country's United Kingdom intelligence community....
 man, with Harker as his deputy. With the ending of the Battle of Britain
Battle of Britain

The Battle of Britain is the name given to the sustained strategic effort by the Luftwaffe during the summer and autumn of 1940 to gain air superiority over the Royal Air Force , especially RAF Fighter Command....
 and the abandonment of invasion plans (correctly reported by both SIS and the Bletchley Park
Bletchley Park

Bletchley Park, also known as Station X, is an estate located in the town of Bletchley, in Buckinghamshire. Since 1967, Bletchley has been part of Milton Keynes, England....
 ULTRA
Ultra

Ultra was the name used by the United Kingdom for intelligence resulting from decryption of encrypted Nazi Germany radio communications in World War II....
 project), the spy scare eased, and the internment policy was gradually reversed. This eased pressure on MI5, and allowed it to concentrate on its major wartime success, the so-called "double-cross" system
Double Cross System

The Double Cross System or XX System, was a World War II anti-espionage and deception operation of the United Kingdom military intelligence arm, MI5....
.

This was a system based on an internal memo drafted by an MI5 officer in 1936, which criticised the long-standing policy of arresting and sending to trial all enemy agents discovered by MI5. Several had offered to defect to Britain when captured; before 1939, such requests were invariably turned down. The memo advocated attempting to "turn" captured agents wherever possible, and use them to mislead enemy intelligence agencies. This suggestion was turned into a massive and well-tuned system of deception during the Second World War.

Beginning with the capture of an agent named Owens, codenamed SNOW
Arthur Owens

Arthur George Owens was a Wales electrical engineer who acted as a Mole during World War II. He was working for MI5 while appearing to the Abwehr to be one of their agents....
, MI5 began to offer enemy agents the chance to avoid prosecution (and thus the possibility of the death penalty) if they would work as British double-agents. Agents who agreed to this were supervised by MI5 in transmitting bogus "intelligence" back to the German secret service, the Abwehr
Abwehr

The Abwehr was a Germany intelligence organization from 1921 to 1944. The term Abwehr was used as a concession to Allies of World War I demands that Germany's post-World War I intelligence activities be for "defensive" purposes only....
. This necessitated a large-scale organisational effort, since the information had to appear valuable but actually be misleading. A high-level committee, the Wireless Board, was formed to provide this information. The day-to-day operation was delegated to a subcommittee, the Twenty Committee (so called because the Roman numerals for twenty, XX, form a double cross
Double cross

Double cross is a phrase meaning to betray....
).

The system was extraordinarily successful. A postwar analysis of German intelligence records found that of the 115 or so agents targeted against Britain during the war, all but one (who committed suicide) had been successfully identified and caught, with several "turned" to become double agents. The system played a major part in the massive campaign of deception which preceded the D-Day
D-Day

D-Day is a term often used in military parlance to denote the day on which a combat attack or operation is to be initiated. "D-Day" often represents a variable , designating the day upon which some significant event will occur or has occurred; see Military designation of days and hours for similar terms....
 landings, designed to give the Germans a false impression of the location and timings of the landings (see Operation Mincemeat
Operation Mincemeat

Operation Mincemeat was a very successful British deception plan during World War II. Mincemeat convinced the German high command that the Allies planned to invade Greece and Sardinia in 1943 instead of Sicily, the actual objective....
).

All aliens entering the country were processed at the London Reception Centre (LRC) at the Royal Patriotic School which was operated by MI5 subsection B1D, 30,000 were inspected at LRC. Captured enemy agents were taken to Camp 020, Latchmere House
Latchmere House (HM Prison)

HM Prison Latchmere House is a Prison security categories in the United Kingdom men's prison, located in the Ham, London area of the London Borough of Richmond upon Thames, in South West London London, England....
, for interrogation. This was commanded by Colonel Robin Stephens. There was a Reserve Camp, Camp 020R, at Huntercombe
Huntercombe (HM Prison)

HM Prison Huntercombe is a male juvenile's prison, located near Nuffield, Oxfordshire in Oxfordshire, England. Huntercombe is operated by Her Majesty's Prison Service, and is the largest juvenile prison for males in England....
 which was used mainly for long term detention of prisoners.

Post-war

The Prime Minister's personal responsibility for the Service was delegated to the Home Secretary Maxwell-Fife in 1952, with a directive issued by the Home Secretary setting out the role and objectives of the Director-General. The service was subsequently placed on a statutory basis in 1989 with the introduction of the Security Service Act. This was the first government acknowledgement of the existence of the service.

The post-war period was a difficult time for the Service with a significant change in the threat as the Cold War
Cold War

The Cold War was the continuing state of conflict, tension and competition that existed between a number of world powers, including the United States, the Soviet Union, People's Republic of China, France, United Kingdom and those countries' respective allies from the mid-1940s to the early 1990s....
 began, being challenged by an extremely active KGB
KGB

KGB is the Russian language abbreviation of Committee for State Security , which was the official name of the umbrella organization serving as the Soviet Union's premier security agency, secret police, and intelligence agency, from 1954 to 1991....
 and increasing incidence of Irish separatism and international terrorism
Terrorism

Terrorism, according to the Merriam-Webster online dictionary, is the systematic use of terror, "violent or destructive acts committed by groups in order to intimidate a population or government into granting their demands." At present, there is no internationally agreed upon definition of terrorism....
. Whilst little has yet been released regarding the successes of the service there have been a number of intelligence failures which have created embarrassment for both the service and the government.

In 1983 one of its officers, Michael Bettaney
Michael Bettaney

Michael Bettany was an intelligence officer working in the Counter-espionage branch of MI5 who was convicted at the Old Bailey in 1984 of offences under the Official Secrets Act after passing sensitive documents to the Soviet Embassy in London and attempting to act as an agent-in-place for the Soviet Union....
, was caught trying to sell information to the KGB
KGB

KGB is the Russian language abbreviation of Committee for State Security , which was the official name of the umbrella organization serving as the Soviet Union's premier security agency, secret police, and intelligence agency, from 1954 to 1991....
. He was subsequently convicted of espionage.

Following the Michael Bettaney
Michael Bettaney

Michael Bettany was an intelligence officer working in the Counter-espionage branch of MI5 who was convicted at the Old Bailey in 1984 of offences under the Official Secrets Act after passing sensitive documents to the Soviet Embassy in London and attempting to act as an agent-in-place for the Soviet Union....
 case, Sir Philip Woodfield was appointed as a staff counsellor for the security and intelligence services. His role was to be available to be consulted by any member or former member of the security and intelligence services who had "anxieties relating to the work of his or her service" that it had not been possible to allay through the ordinary processes of management-staff relations, including proposals for publications.

The Service was instrumental in breaking up a large Soviet spy ring at the start of the 1970s, with 105 Soviet embassy staff known or suspected to be involved in intelligence activities being expelled from the country in 1971.

Controversy arose when it was alleged that the service was monitoring trade union
Trade union

A trade union or labor union is an organization run by and for workers who have banded together to achieve common goals in key areas such as wages, hours, and working conditions....
s and left-wing politicians; Labour Prime Minister Harold Wilson
Harold Wilson

James Harold Wilson, Baron Wilson of Rievaulx, Order of the Garter, Order of the British Empire, Fellow of the Royal Society, Her Majesty's Most Honourable Privy Council was one of the most prominent British politicians of the later half of the 20th century....
 was convinced that personnel were conspiring against him, and as Home Secretary the Labour
Labour Party (UK)

The Labour Party is a political party in the United Kingdom. Founded at the start of the 20th century, it has been since the 1920s the principal party of the Left-wing politics in England, Scotland and Wales, but not Northern Ireland, where it has only recently organised again....
 MP
Member of Parliament

A Member of Parliament, or MP, is a representative of the voters to a parliament. In many countries the term applies specifically to members of the lower house, as upper houses often have a unique title, such as senate, and thus also have unique titles for its members, such as senators....
 Jack Straw
Jack Straw (politician)

John Whitaker Straw , most commonly known as Jack Straw, is a senior United Kingdom Labour Party politician. On 28 June 2007 he was appointed to the offices of Lord Chancellor and Secretary of State for Justice....
 discovered the existence of his own file dating from his days as a student radical.

One of the most significant and far reaching failures was an inability to conclusively detect and apprehend the "Cambridge Five
Cambridge Five

The Cambridge Five was a ring of Soviet espionage in the UK who passed information to the Soviet Union during World War II and into the early 1950s....
" spy ring which had formed in the inter-war years and achieved great success in penetrating the government, and the intelligence agencies themselves. Related to this failure were suggestions of a high-level penetration within the service, Peter Wright
Peter Wright

Peter Maurice Wright was an England scientist and former MI5 counter-intelligence officer noted for writing the controversial book Spycatcher, , which became an international bestseller with sales of over two million copies....
 (especially in his controversial book Spy Catcher, which Britain banned) and others believing that evidence suggested the former Director-General himself, Roger Hollis
Roger Hollis

Sir Roger Henry Hollis, Order of the British Empire, Order of the Bath was a British journalist and secret-service agent, who was Director general of MI5 of MI5 from 1956 to 1965....
. The Trend
Burke Trend, Baron Trend

Burke St John Trend, Baron Trend, Order of the Bath, Royal Victorian Order, Privy Council of the United Kingdom was a British civil servant and later Rector of Lincoln College, Oxford....
 inquiry of 1974 cleared Hollis of that accusation, later corroborated by the former KGB officer Oleg Gordievsky
Oleg Gordievsky

Oleg Antonovich Gordievsky , Order of St Michael and St George , was a Colonel of the KGB and KGB Resident-designate and bureau chief in London, who defected to the United Kingdom, becoming the highest-ranking KGB defector....
. Another spy ring Portland Spy Ring
Portland Spy Ring

The Portland Spy Ring was a soviet spy ring that operated in Britain from the late 1950s till 1961 when the core of the network was arrested by British security....
 was detected by Special Branch
Special Branch

Special Branch is an investigative unit of the Policing in the United Kingdom and other Commonwealth of Nations police services, as well as Ireland's Garda S?och?na....
 of Scotland Yard
Scotland Yard

New Scotland Yard is the headquarters of the Metropolitan Police Service, responsible for law enforcement within Greater London, excluding the City of London, which is covered by the City of London Police....
.

The Security Service's role in counter-terrorism

Mi5buildingthameshouse
The end of the Cold War
Cold War

The Cold War was the continuing state of conflict, tension and competition that existed between a number of world powers, including the United States, the Soviet Union, People's Republic of China, France, United Kingdom and those countries' respective allies from the mid-1940s to the early 1990s....
 resulted in a change in emphasis for the operations of the service, assuming responsibility for the investigation of all Irish republican
Irish Republicanism

Irish republicanism is an ideology based on the Irish nationalist belief that all of Ireland should be a single independent republic.In 1801, under the Act of Union 1800, the Kingdoms of Great Britain and Ireland merged to form the United Kingdom of Great Britain and Ireland....
 activity within Britain and increasing the effort countering other forms of terrorism, particularly in more recent years the more widespread threat of Islamist extremism.

The service has been attributed with a number of successes in breaking up and monitoring extremist Islamist networks since 2001.

It is also attributed with successfully infiltrating the Provisional IRA (PIRA), with operations in conjunction with Special Branch
Special Branch

Special Branch is an investigative unit of the Policing in the United Kingdom and other Commonwealth of Nations police services, as well as Ireland's Garda S?och?na....
 from various police forces leading to 21 convictions for terrorism
Terrorism

Terrorism, according to the Merriam-Webster online dictionary, is the systematic use of terror, "violent or destructive acts committed by groups in order to intimidate a population or government into granting their demands." At present, there is no internationally agreed upon definition of terrorism....
-related offences between 1992 and 1999.

Whilst the British security forces in Northern Ireland
Northern Ireland

conventional_long_name = Northern Ireland|native_name= Tuaisceart ?ireannNorlin Airlann|motto =|image_map = Europe location N-IRL2.png...
 have provided support in the countering of both republican
Irish Republicanism

Irish republicanism is an ideology based on the Irish nationalist belief that all of Ireland should be a single independent republic.In 1801, under the Act of Union 1800, the Kingdoms of Great Britain and Ireland merged to form the United Kingdom of Great Britain and Ireland....
 and loyalist
Ulster loyalism

Ulster loyalism is a militant Unionism in Ireland ideology held mostly by Protestants in Northern Ireland. Some individuals claim that Ulster loyalists are Working class unionists willing to use violence in order to achieve their aims....
 paramilitary
Paramilitary

A paramilitary is a force whose function and organisation are similar to those of a professional military force, but which is not regarded as having the same status....
 groups since the early 1970s, republican sources have often accused these forces of collusion
Collusion

Collusion is an agreement, usually secretive, which occurs between two or more persons to deceive, mislead, or defraud others of their legal rights, or to obtain an objective forbidden by law typically involving fraud or gaining an unfair advantage....
 with loyalists. In 2006, an Irish government committee inquiry found that there was widespread collusion between British security forces and loyalist terrorists in the 1970s, which resulted in 18 deaths.

The Security Service will take responsibility for all security intelligence work in Northern Ireland
Northern Ireland

conventional_long_name = Northern Ireland|native_name= Tuaisceart ?ireannNorlin Airlann|motto =|image_map = Europe location N-IRL2.png...
 from 2007 from the Police Service of Northern Ireland
Police Service of Northern Ireland

The Police Service of Northern Ireland George Cross is the police service that covers Northern Ireland. It is the successor to the Royal Ulster Constabulary a controversial police force which , in turn, was the successor to the Royal Irish Constabulary....
. Both Nuala O'Loan
Nuala O'Loan

Dame Nuala Patricia O'Loan, Order of the British Empire is a noted public figure in Northern Ireland. She was the first Police Ombudsman for Northern Ireland in the country between 1999 and 2007....
, the Police Ombudsman
Parliamentary and Health Service Ombudsman

The Parliamentary and Health Service Ombudsman comprises the offices of the Parliamentary Commissioner for Administration and the Health Service Commissioner for England ....
 for Northern Ireland, and Al Hutchinson
Al Hutchinson

Al Hutchinson is a former Royal Canadian Mounted Police Assistant Commissioner, who served as the Police Oversight Commissioner in Northern Ireland, who in November 2007 became the second Police Ombudsman for Northern Ireland....
, the Oversight Commissioner of the Police Service of Northern Ireland
Police Service of Northern Ireland

The Police Service of Northern Ireland George Cross is the police service that covers Northern Ireland. It is the successor to the Royal Ulster Constabulary a controversial police force which , in turn, was the successor to the Royal Irish Constabulary....
, have expressed reservations.

With the emergence of other terrorist threats in the United Kingdom the service has increased its resource commitment to the detection and prevention of these activities. Numerous raids against suspected militants, and the internment of key suspects in HM Prison
Her Majesty's Prison Service

His/Her Majesty's Prison Service is the United Kingdom Executive Agency tasked with managing most of the prisons within England and Wales. .The Director-General, currently Phil Wheatley, is the administrator of the prison service....
 Belmarsh
Belmarsh (HM Prison)

HM Prison Belmarsh is a Prison security categories in the United Kingdom men's prison, located in the Thamesmead area of the London Borough of Greenwich, in South London London, England....
 in London
London

London is the capital of both England and the United Kingdom, and the most populous municipality in the European Union. An important settlement for two millennia, History of London goes back to its founding by the Roman Empire....
, have been credited to Security Service intelligence. It has been reported that Security Service officers have been involved in interrogation of British citizens interned at the United States
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
' Guantanamo Bay
Guantanamo Bay detainment camp

The Guant?namo Bay Detention Camp is a prison operated by Joint Task Force Guant?namo of the Federal government of the United States since 1987 in Guant?namo Bay Naval Base, which is on the shore of Guant?namo Bay, Cuba, Cuba....
 facility in Cuba
Cuba

The Republic of Cuba is a country in the Caribbean. It consists of the island of Cuba , the island of Isla de la Juventud, and several adjacent small islands....
.

Serious Crime

In 1996, legislation formalised the extension of the Security Service's statutory remit to include supporting the law enforcement agencies in their work against serious crime. Tasking was reactive, acting at the request of law enforcement bodies such as the National Criminal Intelligence Service
National Criminal Intelligence Service

The National Criminal Intelligence Service was a United Kingdom Policing in the United Kingdom set up as a separate body in April 1992 to centralise the gathering and distribution of Intelligence on serious and organized crime matters....
 (NCIS), for who Mi5 agents performed electronic surveillance and evesdropping duties during Operation Trinity
Operation Trinity

Operation Trinity may refer to:*Trinity * Operation Trinity Clerkenwell crime syndicate, First post cold war collaboration of Mi5 to investigate organised crime....
. This role has subsequently been passed to the Serious Organised Crime Agency
Serious Organised Crime Agency

The Serious Organised Crime Agency is a non-departmental public body of the United Kingdom government and a national law enforcement agency in the United Kingdom....
 (SOCA).

Surveillance

In July 2006, Norman Baker MP
Norman Baker

Norman John Baker is a United Kingdom politician. He is the Liberal Democrats Member of Parliament for Lewes . An assiduous campaigner and asker of parliamentary questions, he is currently a member of the Liberal Democrat Shadow Cabinet as Liberal Democrat Shadow Secretary of State for Transport, having previously held other front-bench pos...
 accused the British Government of "hoarding information about people who pose no danger to this country", after it emerged that MI5 holds secret files on 272,000 individuals—equivalent to one in 160 adults. It was later revealed that a "traffic light
Traffic light

Traffic lights, also known as traffic signals, stop lights, traffic lamps, stop-and-go lights, robots or semaphore, are signaling devices positioned at road intersections, pedestrian crossing, or other location to control the flow of traffic....
" system operates:
  • Green – active – about 10% of files
  • Amber – enquiries prohibited, further information may be added – about 46% of files.
  • Red – enquiries prohibited, substantial information may not be added – about 44% of files


Directors-General of the Security Service

  • 1909–1940: Vernon Kell
    Vernon Kell

    Major-General Sir Vernon George Waldegrave Kell, Order of the British Empire was the founder and first Director general of MI5 of the United Kingdom Security Service, otherwise known as MI5....
     (from 1919, Sir Vernon Kell) (b. 1873–d. 1942)
  • 1940–1941: Brigadier Oswald Allen Harker
    Oswald Allen Harker

    Oswald Allen Harker, , also called Brigadier 'Jasper' Harker, was promoted to acting Director General of MI5 in June 1940 when Vernon Kell was dismissed....
  • 1941–1946: Sir David Petrie
    David Petrie

    Sir David Petrie, Order of the Bath was Director general of MI5 of MI5, the United Kingdom's internal security service, from 1941 to 1946. He was described as "a rugged and kindly Scot, with...immense physical and moral strength"...
     (b. 1879–d. 1961)
  • 1946–1953: Sir Percy Sillitoe
    Percy Sillitoe

    Sir Percy Joseph Sillitoe Order of the British Empire was Director General of MI5, the United Kingdom's internal security service, from 1946 to 1953....
     (b. 1888–d. 1962)
  • 1953–1956: Dick White
    Dick White

    Sir Dick Goldsmith White, Order of St Michael and St George, Order of the British Empire , was a United Kingdom intelligence officer. He was Director-General of MI5 of MI5 from 1953 to 1956, and Head of the Secret Intelligence Service from 1956 to 1968....
     (from 1955, Sir Dick White) (b. 1906–d. 1993)
  • 1956–1965: Roger Hollis
    Roger Hollis

    Sir Roger Henry Hollis, Order of the British Empire, Order of the Bath was a British journalist and secret-service agent, who was Director general of MI5 of MI5 from 1956 to 1965....
     (from 1960, Sir Roger Hollis) (b. 1905–d. 1973)
  • 1965–1972: Martin Furnival Jones
    Martin Furnival Jones

    Sir Martin Furnival Jones, Order of the Bath was Director General of MI5, the United Kingdom's internal security service, from 1965 until 1972....
     (from 1967, Sir Martin Furnival Jones) (b. 1912–d. 1997)
  • 1972–1979: Michael Hanley
    Michael Hanley

    Sir Michael Hanley, Order of the Bath was Director general of MI5 of MI5, the United Kingdom's internal security service, from 1972 to 1979....
     (from 1974, Sir Michael Hanley) (b. 1918–d. 2001)
  • 1979–1981: Sir Howard Smith (b. 1919–d. 1996)
  • 1981–1985: Sir John Jones (b. 1923–d. 1998)
  • 1985–1988: Sir Antony Duff (b. 1920–d. 2000)
  • 1988–1992: Patrick Walker
    Patrick Walker

    Sir Patrick Walker, Order of the Bath was Director general of MI5 of MI5, the United Kingdom's internal security service, from 1988 to 1991....
     (from 1990, Sir Patrick Walker) (b. 1932)
  • 1992–1996: Stella Rimington
    Stella Rimington

    Dame Stella Rimington, Order of the Bath was the Director-General of MI5 of MI5 from 1992 to 1996. She was the first female DG of MI5, and the first DG whose name was publicised on appointment....
     (from 1996, Dame Stella Rimington) (b. 1935)
  • 1996–2002: Stephen Lander
    Stephen Lander

    Sir Stephen Lander, Order of the Bath is the chair of the United Kingdom's Serious Organised Crime Agency. He served as Director general of MI5 of the British Security Service from 1996 to 2002....
     (from 2000, Sir Stephen Lander) (b. 1947)
  • 2002–21 April 2007: The Hon
    The Honourable

    The prefix The Honourable or The Honorable is a style used before the names of certain classes of persons....
     Dame
    Dame (title)

    Dame is the female equivalent of address to Sir for a United Kingdom knighthood. In the UK honours system, this can be the title of a woman who has been made a Dame Commander or Dame Grand Cross of the Order of the Bath, Order of St Michael and St George, Royal Victorian Order, or Order of the British Empire....
     Eliza Manningham-Buller
    Eliza Manningham-Buller

    Elizabeth Lydia Manningham-Buller, Baroness Manningham-Buller Order of the Bath was Director general of MI5 of MI5, the United Kingdom internal national security agency, from October 2002 until her retirement on 20 April 2007, aged 58....
     (now Baroness Manningham-Butler; b. 1948)
  • 21 April 2007 onwards: Jonathan Evans
    Jonathan Evans (MI5 officer)

    Jonathan Evans is Director General of MI5 of the MI5, the United Kingdom domestic security and counter-intelligence service. He took over the role on the retirement of his predecessor Dame Eliza Manningham-Buller on 21 April, 2007....


Historical names of the Security Service

Although commonly referred to as "MI5", this was the Service's official name for only thirteen years (1916–29). However, as an acknowledgment of popular thought, "MI5" is used as a sub-title on the various pages of the official Security Service website (see links, below).
  • October 1909: Founded as the "Home Section of the Secret Service Bureau".
  • April 1914: Became a subsection of the War Office "Directorate of Military Operations, section 5" (MO5) — MO5(g).
  • September 1916: Became "Military Intelligence section 5" — MI5.
  • 1929: Renamed the "Defence Security Service".
  • 1931: Renamed the "Security Service".


See also

  • Counter Terrorism Command
    Counter Terrorism Command

    Counter Terrorism Command or SO15 is a Specialist Operations branch within London's Metropolitan Police Service. Counter Terrorism Command was established as a result of the merging of the Metropolitan Police Anti-Terrorist Branch, and the Special Branch#United Kingdom in 2006, to form a single counter-terrorism investigative unit....
     — Scotland Yard
    Scotland Yard

    New Scotland Yard is the headquarters of the Metropolitan Police Service, responsible for law enforcement within Greater London, excluding the City of London, which is covered by the City of London Police....
  • GCHQ
  • Joint Terrorism Analysis Centre
  • Lucy spy ring
    Lucy spy ring

    In World War II espionage, the Lucy spy ring was an anti-German operation that was headquartered in Switzerland. It was run by Rudolf Roessler, a German people refugee and ostensibly the proprietor of a small publishing firm, Vita Nova....
    -alleged to have been a British/Ultra operation to the USSR
  • MI6
  • Spooks
    Spooks

    Spooks is a British Academy Television Awards award-winning British television drama series produced by the independent production company Kudos for BBC One....
     a BBC television drama about the work of a group of MI5 officers (renamed MI-5 in the United States)


External links