Plotted on a map of Britain, the sightings can be seen to stretch from Liverpool to Dover and from Llanelli to Derby.
Whatever the explanation, experts agree that the number of suspected flying saucers has hit unusual highs this summer.
Malcolm Robinson, who studies the phenomenon, said: "Something very bizarre is happening in the skies over the UK." ...
"Some experts believe it could be linked to global warming and craft from outer space are appearing because they are concerned about what man is doing to this planet."
Among mysterious flying objects spotted in recent months was a 'glowing' disc spotted above the M5 motorway.
Royal Navy aircraft engineer Michael Madden said he watched the UFO for three minutes before it 'zoomed off' near Weston-super-Mare in Somerset. - telegraph