A UFO investigator firmly believes an incident dubbed 'Britain's Roswell' represents credible proof of extra-terrestrial life after speaking to those who witnessed the phenomena.

This Boxing Day marks 40 years since the scenes, described as being like "something from Star Trek", played out in Rendlesham Forest, next to US Air Force base in Suffolk.

Philip Mantle, former Director of Investigations for the British UFO Research Association, has interviewed several witnesses, including US servicemen.

And he is convinced that what they saw on December 26, 1980, should be considered as a strong case for proof of aliens travelling to Earth.

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