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UFO files briefing guide

The National Archives · 15 pages · text from the file's own layer

This briefing guide, written by Dr David Clarke of Sheffield Hallam University for The National Archives in March 2008 and revised through June 2012, explains the British government's involvement with UFOs from 1909 onward. It covers phantom airships, foo fighters, ghost rockets, the 1950 Flying Saucer Working Party, Air Ministry and MoD investigations, and the 1979 House of Lords debate. It also lists key National Archives file references, including the Rendlesham Forest papers, and notes that MoD found no evidence of extraterrestrial origin.

  • p. 1 …The acronym UFO is an abbreviation for the US Air Force term „Unidentified Flying Object.‟ It…
  • p. 2 …Initially intelligence officers at the Air Ministry believed the „flying bombs‟ (RV Jones memoirs, „Most Secret…
  • p. 3 …Reports and correspondence between the Foreign Office, Air Ministry and the British air attaché in Stockholm…
  • p. 4 …Air Ministry investigations 1952-64 The sceptical conclusions of the Flying Saucer Working Party set the…
  • p. 5 …the Air Ministry Secret Intelligence Summary (AMSIS) during March 1955 (DEFE 31/118 and AIR 40…
  • p. 6 …Air Ministry became part of the new Ministry of Defence and the three separate service intelligence…
  • p. 8 …Policy files created by the former Air Ministry DDI (Tech) and their successor, the Defence Intelligence…
  • p. 11 …by the Defence Intelligence Staff branch DI55 and their predecessors, Air Ministry DDI (Tech). Policy files…
  • p. 12 …This file shows that both the Air Ministry and Ministry of Supply wished to develop ideas…
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A third series of files, in DEFE 24, contains the majority of the surviving reports and
public correspondence from 1977 onwards. DEFE 24/1206 covers 1977 and DEFE
24/1207, 1977-78. These files contain papers from a number of MoD secretariats. S4
(Air) was replaced by DS8 (Defence Secretariat 8) in 1979. In turn DS8‟s UFO
responsibility passed to Secretariat (Air Staff) 2 or Sec (AS) in 1985. DEFE 24 also
contains a series of „edited copies‟ of UFO reports received by MoD, covering the years
1975-1980. These are duplicates of the main reports series, prepared at a time when the
MoD first considered the release of UFO material to the public. The identities and home
addresses of observers have been deleted from the edited reports. A MoD proposal to
make selected reports available on request to members of the public was reversed in
1984 by defence minister John Stanley on the grounds of cost (DEFE 24/1517).
A total of 17 DS8 and Sec (AS) files were opened under the Freedom of Information Act
during 2008. DEFE 24/1925/1 contains public correspondence 1985-86. DEFE
24/1929/1, DEFE 24/1930/1, DEFE 24/1931/1, DEFE 24/1941/1, DEFE 24/1941/1,
DEFE 24/1942/1 DEFE 24/1949/1 DEFE 24/955/1 DEFE 24/1956/1 and DEFE
24/1957/1 contain correspondence 1986-1992 and can all be accessed through
nationalarchives.gov.uk/ufos.
UFO reports files opened during 2008 include DEFE 24/1922/1, DEFE 24/1923/1, DEFE
24/1924/1 (1984-85), DEFE 24/1926/1-1928/1 (1986-88), (1988-89), DEFE 24/1939/1 –
40/1 (1989-1990), DEFE 24/1953/1 – 54/1 (1991-92). DEFE 24/1938/1, opened in March
2009, contains details of sightings reported between August and December 1989.
Files opened in August 2009 include DEFE 24/2086/1 (UFO incidents 30/31 March
1993) and DEFE 24/1972/1 (alleged UFO involvement in the crash of a Lightning F6
aircraft in September 1970)
UFO correspondence files opened in August 2009 include: DEFE 24/1962/1-1965 /1
(covering 1992-1993). Sightings reports files include DEFE 24/1959/1 (1993); DEFE
24/1960/1 (1994), DEFE 24/1961/1 (1995) and DEFE 24/1974/1-1976/1 (1996).
Files opened in February 2010 include: DEFE 24/1971/1(Parliamentary Questions and
Enquiries on UFOs); DEFE 24/1977/1, DEFE 24/1988/1, DEFE 24/1989/1, DEFE
24/1990/1, DEFE 24/2007/1, DEFE 24/2008/1, DEFE 24/2009/1, DEFE 24/2010/1 (UFO
sighting reports).
UFO correspondence files opened in February 2010 include: DEFE 24/1966-1969/1,
DEFE 24/1979-81/1 and DEFE24/1994/1 and files containing persistent correspondence
include, DEFE 24/2000/1, DEFE 24/2002-2003/1, DEFE 24/2016-2017/1, DEFE
24/2029/1, DEFE 24/2091/1 and DEFE 24/2030/1-2032/1 (opened in 2011).
16 files of public correspondence covering the period 1995 to 2003 were released in
August 2010 including DEFE 24/1973/1, DEFE 24/1978/1, DEFE 24/1982/1, DEFE
24/1992-3/1, DEFE 24/1995-6/1, DEFE 24/1998/1, DEFE 24/2012-15/1 and three files of
persistent correspondence: DEFE 24/2001/1, DEFE 24/2042/1 and DEFE 24/2045/1.
Ten further files in this series were opened in March 2011 including DEFE 24/2028/1,
DEFE 24/2040-41/1, DEFE 24/2044/1, DEFE 24/2062-63/1, DEFE 24/2085/1, DEFE
24/2046/1, DEFE 24/2030 and 2032/1.

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