The following video was taken during the morning hours of May 25, 2014. The video shows a dark coloured disc shaped object with lights flying just above the cloud line. The UFO was spotted from a plane window over London. Some viewers were a little pessimistic after viewing the video stating that it could be a drone, weather balloon or enhanced image but others were less so.
UFO Spotted from Plane Window Over London http://www.youtube.com/watch?v=c12uok9c6cY