UK government releases thousands of classified UFO 'X files'

Military sightings of UFOs, an "alien abduction" in London and an unidentified aircraft shadowing a Lancaster bomber feature among thousands of close-encounter documents released by the British National Archives today.

The extra-terrestrial files reveal how the phenomenon was discussed at the highest level of government and security services worldwide, including at the United Nations (UN), the US Central Intelligence Agency (CIA) and was even the subject of a debate in the House of Lords.