Military experts concluded the aircraft was a Harrier, but could not identify the UFO despite apparently commissioning detailed line drawings of itFearing there could be significant media interest, the MoD took the unusual step of briefing ministers about the sighting. The incident also discloses that British military intelligence officers tasked with investigating UFO reports took a close interest in claims the US was developing a top secret spy-plane.
The sighting is included in military UFO documents made available online today by the National Archives. (Source: Daily Mail)