iles released in July 2012
The files contain a wide range of UFO-related documents, drawings, letters and parliamentary questions ranging from 1965 up to 2008.
Discover the role of the UFO Desk Officers, what they really thought of alien visitors, their ideas to harness alien technology as a weapon, and their briefings to Tony Blair on UFO policy.
Start by reading our highlights guide (PDF, 358kb) to help navigate your way through the files.
Six of the files (DEFE 31/189/1-194/1) contain some duplicates of UFO sighting reports copied by the Air Secretariat between 1996-1999. The original papers were released by The National Archives in February 2010.
Due to the large size of some of these files, we recommend you save them to your computer before opening them. Please right click on the links and select the ‘save’ option.
- DEFE 24/1984/1 (PDF, 46.4 Mb)
- DEFE 24/2083/1 (PDF, 18.7 Mb)
- DEFE 24/1985/1 (PDF, 22.2 Mb)
- DEFE 24/2084/1 (PDF, 124 Mb)
- DEFE 24/1987/1 (PDF, 17.7 Mb)
- DEFE 24/2087/1 (PDF, 10.9 Mb)
- DEFE 24/2005/1 (PDF, 34.9 Mb)
- DEFE 24/2088/1 (PDF, 29.2 Mb)
- DEFE 24/2043/1 (PDF, 63.5 Mb)
- DEFE 24/2089/1 (PDF, 133.1 Mb)
- DEFE 24/2061/1 (PDF, 206.4 Mb)
- DEFE 24/2090/1 (PDF, 19.9 Mb)
- DEFE 24/2073/1 (PDF, 15.5 Mb)
- DEFE 24/2093/1 (PDF, 13.9 Mb)
- DEFE 24/2074/1 (PDF, 44.7 Mb)
- DEFE 31/189/1 (PDF, 30.9 Mb)
- DEFE 24/2077/1 (PDF, 23.2 Mb)
- DEFE 31/190/1 (PDF, 12.3 Mb)
- DEFE 24/2078/1 (PDF, 110.9 Mb)
- DEFE 31/191/1 (PDF, 17.2 Mb)
- DEFE 24/2079/1 (PDF, 17.8 Mb)
- DEFE 31/192/1 (PDF, 8.8 Mb)
- DEFE 24/2080/1 (PDF, 147.9 Mb)
- DEFE 31/193/1 (PDF, 1.8 Mb)
- DEFE 31/194/1 (PDF, 2.3 Mb)
Previous file releases
The National Archives holds other UFO files that have already been released by the Ministry of Defence. You can download these in PDF format for a small fee. The files contain details of numerous UFO sightings.