Large scale document archive

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.

This is the first time in Britain - in fact as far as we can tell, in any country - that the declassified archive of a head of government has ever been published in full, paper or online.

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.

list & links to the PM's files

Secret no more


Below are links to the downloadable files in numerical order. The subject terms are those used in the original filing system. Files held back from release are listed in red.

An average file has around 200 pages.

You can read here an account of how filing worked at No.10, and the system for archiving MT's Prime Ministerial papers, both of which had their quirks.

Some of these downloads are very big, as large as 75MB, though most are in the range 1-10MB. To keep sizes down, images have been compressed, though legibility should never be a problem. High quality copies can also be supplied, where a need is established, on application to the site editor.

Where documents within a file have been selected for the site database, they can easily be viewed by clicking the link after the file name ("Selected PREM19/959"), as well as via conventional searches from the archive search screen. Over time most files will have had documents selected in this way, but it will take time and care is being taken not to allow the site database to become so large as to be unmanageable.

You can sort each column by clicking on its title in bold at the top, a powerful tool to find all the files on a particular subject over several years.

You can also search the list from the box on the right. The term "Public Spending", for example, will produce all the parts of the main file on that topic.

Chancellor of the Exchequer's Private Office files, 1979-89

1979-89: Chancellor's Private Office files [links to hundreds of digitised files from the Chancellorships of Sir Geoffrey Howe and Nigel Lawson]

engagement diaries

An alternative way through the material is to read MT's engagement diaries, jumping day to day.

The engagement diaries link directly to relevant documents in the site database, so this is a good way to recover the perspective from the Red Box.


Link to full file File name Begins Ends Date of release Any docs withheld?sort descending File classification Pages Link to selections
PREM19/837 Manpower (Measures to counter unemployment; Central Policy Review Staff (CPRS) Unemployment Study) (Part 6) 1981 Nov 2 1982 Mar 30 2012 Dec 28 Confidential 382
PREM19/2715 Government Machinery (Reviews of tourism and leisure policy) (Part 1) 1983 May 13 1989 Jun 16 2016 Dec 30
PREM19/1836 Local Government (Relations with central government, organisation & finance) (Part 30) 1986 Jun 6 1986 Oct 31 2014 Dec 30 Secret 266
PREM19/161 Defence (Defence budget) (Part 1) 1979 May 10 1980 Jan 17 2010 Dec 30 Secret 129
PREM19/1494 Foreign Policy (East/West relations) (Part 4) 1983 Oct 27 1985 Jun 29 2014 Dec 30 Secret 315
PREM19/1158 Manpower (Measures to counter unemployment; Central Policy Review Staff (CPRS) report on unemployment, September 1982) (Part 8A) 1982 Sep 1 1982 Sep 30 2013 Aug 1 Confidential 142
PREM19/2418 Prime Minister (Prime Minister's meeting with Irina Ratushinskaya, 22 December 1986) 1986 Dec 19 1988 Jun 13 2016 Jul 21
PREM19/1898 Prime Minister (Meeting with Ted Garrett MP and Nick Brown MP about Swan Hunter) 1986 Mar 20 1986 Mar 20 2016 Feb 19
PREM19/757 Foreign policy (Prime Minister's visit to Saudi Arabia & the Gulf States, April 1981) (Part 2) 1981 Apr 13 1982 Nov 19 2012 Dec 28 Confidential 247
PREM19/2567 USA (Prime Minister's visit to Washington, July 1987) (Part 2) 1987 Jul 24 1987 Nov 30 Retained Temporarily retained by Department
PREM19/422 Economic policy (Public Spending) (Part 17) 1981 Nov 13 1981 Dec 8 2011 Dec 30 Secret 229
PREM19/1757 Foreign Policy (Summary notes on Joint Intelligence Committee (JIC) Assessments) (Part 1) 1983 Sep 22 1986 Jul 29 2014 Dec 30
PREM19/1414 Aerospace (UK-Hong Kong air services licensing appeal: demise of Laker Airways; Hong Kong-Australia Air Services Agreement) 1980 Jun 12 1985 Oct 9 2014 Dec 30 Secret 184
PREM19/1078 Legal procedure (Contempt of Court Bill; traducing of third parties in judicial proceedings) 1979 Jul 19 1983 Nov 21 2013 Aug 1 Confidential 24
PREM19/1618 Royal Family (Broadlands Archives: transfer to Southampton University of papers of Lord Mountbatten) 1985 Jul 8 1985 Sep 24 2014 Dec 30