A secret dossier reveals British spies spent half a century trying to catch a UFO so they could use its alien technology to build superweapons.
Declassified files reveal the Government was concerned the Soviet Union or China had impounded a UFO and were harvesting its secrets to develop super-fast warplanes.
The cache of documents reveal between 1947 to 1997, intelligence services ran two UFO desks - one was a public-facing desk where people could phone in sightings. The real work was carried out in the background by spies set to investigate.
The UFO desks ran until 1997 by which time word had come from Whitehall that security services 'investigating 'X files stuff such as alien abductions' had become a diversion from their main duties.
A secret dossier reveals British spies spent half a century trying to catch a UFO so they could use its alien technology to build superweapons (stock image)
A review was ordered to confirm the desk should be shut down, but also to determine whether anything had been learned over the years which could be useful to military.
Now a report called UAPs (Unidentified Aerial Phenomena) in the UK Air Defence Region is part of three files running to more than 1,000 pages set to be released after being declassified.
They were held back from the UFO records earmarked for transfer to the National Archives as part of the Open Government project from 2008 to 2013.
Declassified files reveal the Government feared