He brings up the important case of Rendlesham and its important to know that some of these files were destroyed or removed for some reason (more below about this).
I highly recommend you read the files here yourself from the UK national archives and start with the the highlights quide. I would like to hear your comments and feedback if you have gone through these files on any particular cases of interest.
The mystery deepens - its likely the rendlesham forest incident from 1980 was so top secret that they had to destroy the files:
BBC correspondent Neil Henderson noted, "The missing files relate to a report of mysterious lights from U.S. servicemen at RAF [Royal Air Force] Woodbridge in Suffolk in 1980. The disappearance came to light with the release of 8,000 previously classified documents on UFOs. Officials found a 'huge' gap where defense intelligence files relating to the case should be, the papers show."
David Clarke, the author of "The UFO Files: The Inside Story of Real-Life Sightings" (The National Archives, 2009) who has been working with Britain's National Archives since 2008 to release the information, clarified the issue. "It is not the case that files on Rendlesham have been destroyed. What has been lost or destroyed are a series of Defence Intelligence UFO files covering the years 1980 through 1982,"
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