MT's official files as Prime Minister, 1979-90
MT's official files as PM can be read on this site as they are released, in full and free to all - the confidential files originally stored at No.10, the core record of her premiership.
The files have been copied at the British National Archives (TNA) at Kew in London and can be downloaded precisely as they appear in the reading room.
We are doing something more to help people make sense of this mass of information. The files are subject-based, logically enough, but that system makes it difficult to reconstruct the flow of paper across the Prime Minister’s desk at any point in time, depriving us of a sense of context and cross-winds, some of them overwhelming.
To combat this effect we are uploading a large selection of the most important documents from these files – thousands in total - to our powerful site database. You can search and sort by date, subject and other parameters, getting as close as anyone can now get to reconstructing the Prime Minister’s daily "Red Boxes", the rich diet of foreign and domestic policy papers submitted to her by the No.10 Private Office.
|File name||Title||Begins||Ends||Date of release||Any docs withheld?||File classification||Pages|
|PREM19/2495||Security (Miscellaneous leaks and security breaches) (Part 1)||Begins: 1985 Mar 26||Ends: 1987 Jun 30||Date of release: Date of release: Retained||File classification: Retained Sec 3.4|
|PREM19/2496||Security (Miscellaneous leaks and security breaches) (Part 2)||Begins: 1987 Jul 2||Ends: 1988 Dec 22||Date of release: Date of release: Retained||File classification: Retained Sec 3.4|
|PREM19/592||Security (Panorama programme on the KGB (Soviet Committee for State Security))||Begins: 1981 Apr 14||Ends: 1981 Oct 20||Date of release: 2011 Dec 30||File classification: Secret||Pages: 8|
|PREM19/363||Security (Policy on interception) (Part 1)||Begins: 1979 Jun 7||Ends: 1980 Mar 19||Date of release: Date of release: Retained||File classification: Unknown|
|PREM19/364||Security (Policy on interception) (Part 2)||Begins: 1980 Mar 21||Ends: 1980 Apr 11||Date of release: Date of release: Retained||File classification: Unknown|
|PREM19/590||Security (Policy on interception) (Part 3)||Begins: 1980 Apr 18||Ends: 1981 Oct 9||Date of release: Date of release: Retained||File classification: Retained Sec 3.4|
|PREM19/1625||Security (Policy on interception: legislation) (Part 4)||Begins: 1975 Oct 31||Ends: 1985 Jan 31||Date of release: 2014 Dec 30|
|PREM19/1629||Security (Possible penetration of Foreign and Commonwealth Office (FCO) Confidential communications)||Begins: 1982 Mar 4||Ends: 1985 Dec 6||Date of release: 2014 Dec 30|
|PREM19/1635||Security (Prime Minister's visit to Century House (SIS headquarters), September 1984)||Begins: 1984 Sep 5||Ends: 1984 Oct 8||Date of release: 2014 Dec 30||File classification: Top Secret||Pages: 10|
|PREM19/2517||Security (Procedure for dealing with suspicious letters and parcels received at 10 Downing Street: letter bombs) (Part 1)||Begins: 1968 Sep 25||Ends: 1986 Jan 20||Date of release: Date of release: Retained||File classification: Retained Sec 3.4|
|PREM19/587||Security (Proposed BBC Panorama programme on British intelligence services)||Begins: 1980 Jun 18||Ends: 1981 Feb 3||Date of release: 2011 Dec 30||File classification: Top Secret||Pages: 58|
|PREM19/594||Security (Prosecution of John Wagstaff under Official Secrets Act; investigation by Security Commission)||Begins: 1980 May 13||Ends: 1981 May 8||Date of release: 2012 Feb 22||File classification: Secret||Pages: 123|
|PREM19/911||Security (Provisional IRA: acquisition of weapons)||Begins: 1982 Aug 26||Ends: 1982 Sep 7||Date of release: Date of release: Retained Sec 3.4||File classification: Unknown|
|PREM19/1621||Security (Publication of 'British Intelligence and Covert Action' by Jonathan Bloch and Patrick Fitzgerald: security issues; Bloch's UK refugee residency status; protection of intelligence identities)||Begins: 1983 Mar 9||Ends: 1985 Oct 28||Date of release: 2014 Dec 30|
|PREM19/910||Security (Publication of book by Gordon Welchman (former head of Hut 6) called 'The Hut Six Story' on wartime German Enigma cryptanalysis: reactions of US and UK governments)||Begins: 1982 Apr 30||Ends: 1982 Jul 27||Date of release: 2012 Dec 28||File classification: Secret||Pages: 8|