Stunned onlookers watch as mysterious orange UFOs swoop across Britain's skies

Darting silently in formation, the mysterious glowing orbs light up the night sky.

Some say these orange lights even weave in between each other with the precision of a synchronised flying team from some far corner of the universe.

Clusters of more than 100 have been spotted across Britain and even Holland, leaving onlookers with an eerie sense that, for all the mystifying beauty of the strange objects, they may have just witnessed an armada of invading UFOs.

The sightings have prompted defence officials to check their logs and sent UFO fans into orbits of excitement. Engineer Paul Slight, 54, took photos on his mobile phone of the strange objects hovering over Lincoln at 10.30pm while he was cycling home after a day out with friends.

'There were 26 of them at first, dodging and darting in between each other like they were playing a game,' he said.

On the night of May 27, at around 11.30pm guesthouse owner Auberon  Hedgecoe, 40, of nearby Huntingdon, also saw the lights. 'There was  no sound,' he said.