A UFO expert believes he's solved one of the biggest alien mysteries in UK history - and says one man holds the key to confirming his theory.
The "Calvine Incident" is infamous as a picture captured at the scene shows a triangular craft flying low over the ground, and the image, taken in 1990, is of surprisingly high quality.
Behind the 'alien' craft is a conventional aeroplane, adding credibility to the theory that it was a UFO encounter that was handled by the military, as the Daily Star reports.