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PDF 82 Mar 4 Th Declassified documents Major Archive (TNA) JIC: Joint Intelligence Committee minutes (JIC(82)9th Meeting) (1100Z) (Nicoll Reports) ["the Committee was alert to the lessons to be learnt from Nicoll"] [declassified Dec 2012]
PDF 82 Mar 11 Th Declassified documents Major Archive (TNA) JIC: Joint Intelligence Committee minutes (JIC(82)10th Meeting) (1100Z) (Nicoll Reports) [arrangement for release to Allies] [declassified Dec 2012]
PDF 82 Mar 18 Th Declassified documents Major Archive (TNA) JIC: Joint Intelligence Committee minutes (JIC(82)11th Meeting) (1100Z) (Nicoll Reports) [Frank Cooper found them 'fascinating'; requests summary with lower classification; not immediately agreed] [declassified Dec 2012]
PDF 82 Mar 25 Th Declassified documents Major Archive (TNA) JIC: Joint Intelligence Committee minutes (JIC(82)12th Meeting) (1100Z) ("Nicoll Report: Release to the Intelligence Allies") [already sent to MT; report summary would be sufficient for Frank Cooper needs] [declassified Dec 2012]
PDF 82 Mar 25 Th Declassified documents Major Archive (TNA) Falklands: GCHQ intercept of Argentine signals (?1902Z) ("Argentine naval exchanges and sitrep relating to British ship in Falklands and South Georgia area") [24-25 March signals] [declassified May 2023]
PDF 82 Mar 30 Tu Declassified documents Key Archive (TNA) Falklands: SIS UKE Buenos Aires signal to GCHQ (1640Z) (decrypted Argentine signal) [British Naval Attaché comments: "This looks serious and suggests a recce of an invasion beach on the West of East Falkland"] [declassified May 2023]
PDF 82 Mar 30 Tu Declassified documents Key Archive (TNA) Falklands: GCHQ intercept of Argentine signal ("Argentine submarine force commander gives instructions relating to possible submarine threat, and also to reconnaissance mission") ["reconnaissance of the beach and/or disembarkation [word garbled]"] [declassified May 2023]
PDF 82 Mar 31 We Declassified documents Major Archive (TNA) Falklands: GCHQ signal to SIS UKE Buenos Aires (1732Z) (Naval Attaché's questions about Bahia Paraiso) [nothing further found] [declassified May 2023]
PDF 82 Apr 1 Th Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)13th Meeting) (1000Z) (Falkland Islands; Nicoll Reports) [MT thought Nicoll Report and summary 'excellent'] [declassified Dec 2012]
PDF 82 Apr 2 Fr Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)14th Meeting) (Falklands) [minutes given "special distribution", currently unavailable] [declassified Dec 2012]
PDF 82 Apr 3 Sa Declassified documents Major Archive (TNA) Falklands: JICREP UKE Washington telegram to JIC (1830Z) ("JICTEL No.71 of 3 April: Falkland Islands") [State Department intelligence staff say Argentine government has told US "to limit their role strictly to tacit diplomatic support for UK"] [declassified Dec 2012]
PDF 82 Apr 3 Sa Declassified documents Major Archive (TNA) Falklands/JIC: Z Division minute for GCHQ Director ("Priority of Requirement for Intelligence on Argentina and the Falklands") ["We cannot be faulted - rather the reverse - in respect of the intelligence response we have provided to this low priority requirement from the JIC"] [declassified May 2023]
PDF 82 Apr 4 Su Declassified documents Major Archive (TNA) Falklands: JICREP UKE Washington telegram to JIC (0135Z) ("JICTEL No.73: Falkland Islands") [State Department reporting from Buenos Aires - marines from HMS Endurance now interned on South Georgia, bomb near British Embassy in BA defused] [declassified Jun 2017]
PDF 82 Apr 4 Su Declassified documents Major Archive (TNA) Falklands: Coles minute for Whitmore (note for the record) [MT requests analysis of recent intelligence and JIC assessments of the Falklands Islands situation] [declassified Dec 2012]
PDF 82 Apr 4 Su Declassified documents Major Archive (TNA) Falklands/JIC: GCHQ London signal to GCHQ Cheltenham (2032Z) ("Special JIC Sunday 4 April") ["little to show for this two-hour meeting in way of output"; Tovey strongly supporting JIC chair in demanding that Rowlands be summoned before Secretary of the Cabinet for revealing past SIGINT success against Argentina] [declassified May 2023]
PDF 82 Apr 5 Mo Declassified documents Major Archive (TNA) Falklands: Cooper minute for Chief of Defence Staff (dissident groups within Argentina) [MT asked Cooper whether "our friends" could cause problems through them] [declassified Feb 2018]
PDF 82 Apr 5 Mo Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)15th Meeting) (Falklands) [minutes given "special distribution", currently unavailable] [declassified Dec 2012]
PDF 82 Apr 5 Mo Declassified documents Major Archive (TNA) Falklands: GCHQ notes of meeting ("Falkland Islands - Cover & Reporting") [GCHQ staffing (including Argentine diplomatic communications); Accommodation; Cover; SIGINT alert status; AOB] [declassified May 2023]
PDF 82 Apr 6 Tu Declassified documents Major Archive (TNA) Falklands: Cabinet Secretary minute for Coles (false reports that British intelligence had warning of invasion much earlier than we did) [MT "will want to be extremely careful about what she says [in public] on this"] [declassified Dec 2012]
PDF 82 Apr 6 Tu Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)16th Meeting) (1330Z) (Falklands - immediate assessments; Argentine armed forces; events leading up to invasion; review of intelligence; assessments staff future work) [daily updates as required, ideally in a way that could be shared with intelligence allies] [declassified Dec 2012]
PDF 82 Apr 6 Tu Declassified documents Major Archive (TNA) Falklands/JIC: GCHQ London signal to GCHQ Cheltenham (1700Z) ("Highlights of special JIC on Tuesday 6 April 1982" - JIC(82)16th Meeting) [decision to invade could not have been taken before 28/29 Mar; JIC agreed PM's request that Nicoll examine JIC performance in run-up to war, but Tovey warned against "repeated investigations" into intelligence arrangements as "insulting and ... highly damaging to morale"] [declassified May 2023]
PDF 82 Apr 6 Tu Declassified documents Major Archive (TNA) Falklands: GCHQ notes of meeting ("SIGINT support to the Task Force") [declassified May 2023]
PDF 82 Apr 7 We Declassified documents Major Archive (TNA) Falklands: Government Chief Whip's PS letter to Cabinet Office (Ted Rowlands remark that Britain had been reading Argentine codes) [discussion among MOD ministers; Jopling approach to Cocks; "Mr Rowlands has undertaken to make no further public pronouncements on this matter"] [declassified Dec 2012]
PDF 82 Apr 8 Th Declassified documents Major Archive (TNA) Falklands: CINCFLEET signal to GCHQ (1646Z) ("GCHQ support for Corporate") [list of requirements including continuous support at Northwood from beginning of MEZ] [declassified May 2023]
PDF 82 Apr 13 Tu Declassified documents Major Archive (TNA) Falklands: MOD conversation record (1315Z) (Nott, Cooper & others) [DGI to proceed speedily to US to improve flow of intelligence; circulation of intelligence in Whitehall] [declassified Spt 2017]
PDF 82 Apr 13 Tu Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)17th Meeting) (1530Z) (Falklands - immediate assessments; intelligence product; forthcoming visit by DGI to US; disclosure of UK intelligence capability; review of intelligence - Falkland Islands; Poland - future assessments) [meet demand for assessments earlier in the day by securing wider circulation for MOD and FCO product rather than earlier circulation of JIC assessments] [declassified Dec 2012]
PDF 82 Apr 14 We Declassified documents Major Archive (TNA) Falklands: GCHQ intercept of Argentine signal (1104Z) ("Argentine navy issues summary reporting military and political situation claim to have detected British submarines by radar") [Commander of Maritime Fleet signal to 25 de Mayo - pressures on MT increasing; "Russia might intervene"] [declassified May 2023]
PDF 82 Apr 15 Th Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)18th Meeting) (1330Z) (Falklands - current and immediate assessments; possible invocation by Argentina of Rio Treaty; item bearing a national caveat; disclosure of UK intelligence capability; media comments on UK/US intelligence cooperation; release of product to intelligence allies) [publicity to US/UK cooperation "most unwelcome" but intelligence cooperation not affected; ministerial concern at UK assessments being passed to intelligence allies, risk that policy and operational planning not be revealed] [declassified Dec 2012]
PDF 82 Apr 17 Sa Declassified documents Major Archive (TNA) Falklands: Warren-Gash minute to FCO Defence Department ("Argentine request for satellite coverage of Falkland Islands ('LANDSAT')") [MOD finally deciding Argentinians would derive little benefit from images of the Falklands, but images of the Task Force would be "highly damaging"] [declassified Jun 2017]
PDF 82 Apr 17 Sa Declassified documents Major Archive (Reagan Library) Falklands/JIC: JIC Immediate Assessment (JIC(IA)29) (1715Z) (Falkland Islands) [Latin America Current Intelligence Group meeting 17 Apr] [declassified Jul 2002]
PDF 82 Apr 18 Su Declassified documents Major Archive (TNA) Falklands: GCHQ intercept of Argentine signal (1126Z) ("Argentine naval activity: Commander, submarine forces gives details of Task Force 79 and issues combat instructions") [no Super Etendards embarked on 25 de Mayo; all submerged submarines to be treated as hostile] [declassified May 2023]
PDF 82 Apr 22 Th Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)19th Meeting) (?1330Z) (minutes given special distribution - none available) [declassified Dec 2012]
PDF 82 Apr 22 Th Declassified documents Major Archive (TNA) Falklands: GCHQ intercept of Argentine signal ("Argentine summary of intelligence on British forces, 21 April: advance action against Georgias not ruled out") [British Task Force could arrive in operational area from 27/28 April] [declassified May 2023]
PDF 82 Apr 22 Th Declassified documents Major Archive (TNA) Falklands: GCHQ notes of meeting ("Falklands: Notes of Meeting on 22 April 1982") [Boston Globe leak] [declassified May 2023]
PDF 82 Apr 23 Fr Declassified documents Minor Archive (TNA) Falklands: GCHQ intercept of Argentine signal (2126Z) ("Argentine naval/air activity: destroyer Trinidad reports results of naval/air exercise") ["extremely effective"] [declassified May 2023]
PDF 82 Apr 24 Sa Declassified documents Major Archive (TNA) Falklands: GCHQ intercept of Argentine signal (0636Z) ("Argentine battle plan: details from Commander Task Force 79") ["wait and see posture"; "aiming to make it difficult for the opponent to act by dividing his efforts by means of a threat from different directions"] [declassified May 2023]
PDF 82 Apr 26 Mo Declassified documents Minor Archive (TNA) Falklands: GCHQ intercept of Argentine signal (0533Z) ("Argentine air force commander claims morale is high, after to visit to Falklands on 24 April") [Lami Dozo visit] [declassified May 2023]
PDF 82 Apr 26 Mo Declassified documents Minor Archive (TNA) Falklands: GCHQ intercept of Argentine signal (2132Z) ("Tanker Medanos ordered to return to port - 25 April") ["return to Puerto Belgrano immediately"] [declassified May 2023]
PDF 82 Apr 27 Tu Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)20th Meeting) (?1330Z) (minutes given special distribution - none available) [declassified Dec 2012]
PDF 82 Apr 29 Th Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)21st Meeting) (1000Z) (Falklands - current assessments; Soviet long-term interest in Argentina and the Falkland Islands; immediate assessments; disclosure of US intelligence capability) [paper on Soviet intentions in the South Atlantic to be redrafted to take account of ministerial concerns "however ill-founded"] [declassified Dec 2012]
PDF 82 Apr 30 Fr Declassified documents Major Archive (TNA) Falklands: GCHQ intercept of Argentine signal (1442Z) ("Commander Task Force states that Argentine submarines have entered exclusion zone; air and surface units of Task Force 79 are authorised to operate in zone if necessary") [declassified May 2023]
PDF 82 May 5 We Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)22nd Meeting) (?1330Z) (minutes given special distribution - none available) [declassified Dec 2012]
PDF 82 May 6 Th Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)23rd Meeting) (1330Z) (Falklands - current assessments; Soviet long-term interest in Argentina and the Falkland Islands; implications for Soviet policy of declining growth; national caveat items on Argentina/Chile; intelligence liaison) [agrees further redraft of Soviet South Atlantic interests paper to take more account of naval aspects] [declassified Dec 2012]
PDF 82 May 9 Su Declassified documents Major Archive (TNA) Falklands: GCHQ intercept of Argentine signal (2220Z) ("Falkland Islands dispute: Commander South Atlantic Area evaluates British capabilities for anticipated hostilities") [as assigned by the Military Committee] [declassified May 2023]
PDF 82 May 10 Mo Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)24th Meeting) (1430Z) (Falklands - current assessments; threat to British interests of terrorist attacks by Argentine Government or terrorist organisations; strategic options open to Argentina in the Falkland Islands; Nicoll Report) [Argentine options paper to be available in final form for OD(SA) on 13 May] [declassified Dec 2012]
PDF 82 May 13 Th Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)25th Meeting) (1000Z) (Falklands - current intelligence; daily assessments; intelligence liaison; future JIC work) [Soviet long-term interests in South Atlantic paper agreed; daily assessment papers working well, with copies available to US and UK officials at start of US working day; future work including Gibraltar and Central America including Belize] [declassified Dec 2012]
PDF 82 May 13 Th Declassified documents Major Archive (TNA) Falklands: GCHQ intercept of Argentine signal (2033Z) ("Air Authority Comodora Rivadavia requests assessment of probability of British air attack against mainland") [possible Vulcan attack on military airbases] [declassified May 2023]
PDF 82 May 14 Fr Declassified documents Major Archive (TNA) Falklands: Armstrong minute to MT ("Argentina and the Falkland Islands") [role of intelligence in the lead-up to Argentine invasion of the Falklands] [declassified 2012]
PDF 82 May 17 Mo Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)26th Meeting) (1330Z) (Falklands - current assessments; timing of CIGs) ["considerable advantage" in producing daily assessments "at a time more directly related to OD(SA) meetings at 0930" - agreed to discuss moving time of daily CIGs] [declassified Dec 2012]
PDF 82 May 20 Th Declassified documents Major Archive (TNA) Falklands/JIC: Joint Intelligence Committee minutes (JIC(82)27th Meeting) (1000Z) (Falklands - current assessments; immediate assessments; timing of CIGs) [decision to retain existing CIG timings "so that the CIG could take full advantage of the bulk of intelligence that became available between six and ten o'clock in the morning and so that Departmental representatives, particularly from the MOD, could bring the benefits of prior briefings within their own organisations"] [declassified Dec 2012]

Documents lie at the core of this website, each one dated and sorted chronologically (by default) in search results. Most are images in PDF format of original paper documents scanned or filmed for the site. There also transcripts of speeches and interviews, press articles, photos, videos, and more. The document database contains tens of thousands of items and permits complex searching.

Files are multi-page PDFs from which most of the documents on the site are selected. All of Mrs Thatcher’s official files from No.10 are available in full on this site (paper copies are stored at the National Archives in the series PREM19), as well as most of those of Geoffrey Howe and Nigel Lawson as Chancellor (stored at TNA as series T639 and T640).

Guides are articles about key events and topics. Many were written to accompany annual releases of Mrs Thatcher’s private and party papers at the Churchill Archive Centre in Cambridge.

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