The files contain a wide range of UFO-related documents covering the years 1981-1996.
Find out more about close encounters, stray satellites, bright lights and Britain’s very own Roswell – Rendlesham Forest in Suffolk.
Start by reading our highlights guide (PDF, 254kb) to help you navigate your way
through the files.
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.