On August 4th 1990, a 75 ft wide diamond object was tailed by an RAF Harrier 20
miles north of Pitlochry in Scotland. It appeared to hover for 10 minutes above the A9 near Calvine. It then shot off up into the sky. An unnamed
photographer took a series of photographs and sent them to the Daily Record newspaper. They in turn sent them to the Ministry of Defence, for comment,
before running a report on the subject. The story was never run by the Daily Record for reasons unknown. 
RAF Tornado Takes Evasive Action from UFO - Nov 1990
During the evening of Nov 5th 1990 a number of strange sightings were recorded throughout Northern Europe. Around this time there were many UFO sighting in Belgium. (of which there is More at this link): www.abovetopsecret.com...)
In France, about 15 miles east of Paris, martial arts instructor and former Air Force/Air France pilot, Jean Gabriel Gresle was standing outside a local gym at 7pm local time (6pm UK time). He saw an “…enormous device..like a floating city…about 1000 ft long with a thickness of 200 feet…triangular substructures and many, many lights. It projected two huge divergent beams of light that didn’t quite reach the ground”. Gresle noted the lights dimmed very quickly as it turned its back on his group and noted a zone of silence as it flew over at “never more than 100 mph”.
The same evening a flight of RAF Tornados were flying back to the UK from RAF
Laarbruch, Germany. At around 6pm a large object on their right was detected sporting an array of blue and white lights and overtook the group. After
a short moment the craft accelerated out of sight at unimaginable speed. Nothing showed up on the radar of the control tower or the aircraft. Another
RAF crew reportedly saw the craft and had given “possible identifications” as Stealth aircraft. But the blue and white lights make that seem
highly unlikely. A British Airways passenger jet was returning to London at 31,000 ft over the Alps and the pilot also reported a strange sighting. At around 6.15pm the pilot reported seeing ahead and to his right a set of bright lights with the leading light somewhat larger and brighter than the others described as “a large silver shaped disc “. They were flying in a V formation but disappeared out of sight rapidly. He heard another crew report in a similar sighting.
Later reports claimed this was a satellite, whilst the pilot responded that he had seen satellite re-entries before and it didn’t look like a satellite to him. A colleague in another BA aircraft later told him he had seen two bright mystifying lights over the North Sea on the same evening.
Around 10pm, two more RAF Tornado crews sighted two large UFOs with blue and white lights around the rim over the North Sea. As they closed in on their targets one of the fighters was forced into evasive action to avoid colliding with a UFO as both targets headed north and out of range. Again radar picked up nothing. The mystery of what the pilots saw remains.
Sources : FSR 1991 V36 No.2. Timothy Good – Need to Know, Nick Redfern – A Covert Agenda.
Airline Encounters – April – June 1991
On the night of April 21st 1991 approx. 9.00 pm Captain Achille Zaghetti, was piloting a McDonnell MD-80 aircraft, he was astounded as a UFO past his aircraft and then flew over the coast of Kent at a height of more than 22,000 feet.
The incident was classed as a near miss because the UFO was just 1,000 feet above the airliner, and an official inquiry was launched by the CAA.
The CAA investigation resulted in a brief statement two weeks later:
"The pilot said the object was light brown, round, three meters long, and did not describe any means of propulsion, "The aircraft was under the control of London air traffic control center who had no other aircraft in the vicinity, but consistent with the pilot report, a faint radar trace was observed ten nautical miles behind the Alitalia aircraft.
"Extensive inquiries have failed to provide any indication of what the sighting may have been."
The next “close encounter” took place on June 1, 1991, when an amber cylindrical object, ten feet long, was seen at close quarters by the crew of a Britannia Airways Boeing 737 bound for London from Dublin. Sixteen days later, yet another cylindrical-shaped UFO was sighted by German engineer, Walter Leiss, aboard Dan Air flight DA 4700 as it headed toward Hamburg.
news.bbc.co.uk...
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The meteorological officer at RAF Shawbury reported an even more startling sight.
He first saw a stationary object that then moved rather erratically in his direction at speed. The object then appeared to fire a beam down onto the
countryside below, sweeping left to right across the fields as if conducting a search. The UFO was estimated to be the size of a regular jumbo jet and
emitted the same hum that the earlier witnesses reported. 
January 6, 1995, Captain
Roger Wills and copilot Mark Stuart were beginning their descent towards Manchester Airport in a Boeing 737. Seventeen minutes before touchdown, a
mysterious, triangular-shaped UFO flashed past the right-hand side of the aircraft at a distance described as being "very close" - so close, in
fact, that the crew instinctively "ducked" in their seats. 
Back in the 1992, Ray Santili, a British Entrepreneur, had been searching for old
footage of Elvis Presley in the United States. He claimed that whilst visiting a former cameraman from the US military, he had acquired around 90
mins of film of the original autopsy of a captured alien from 1947. 
According the report. The man - 'a sensible sort of lad and genuine', according
to police - was making his way home after a night out in Widnes, Cheshire, at 2.30am on July 15, 1996. 
He was once described by a colleague, Anne Widdecombe, as having “something of
the night about him”. On March 8th 1997 a large triangular UFO was seen hovering above the home of the former home secretary and Conservative Party
leader Michael Howard. Eyewitnesses said they had seen and heard a "humming" object the size of two passenger planes close to his house near
Folkestone in Kent. 
