Britain’s most well-known UFO sighting may have been caused by a bout of electromagnetic-fuelled psychosis, a top researcher has claimed.

The Rendlesham Forest incident, where members of the US Air Force stationed at RAF Bentwaters and RAF Woodbridge in Suffolk, England, reported seeing unexplained lights and a craft in the forest in December 1980, has left people puzzled for decades over what the cause of the lights could have been.