Delta UFO type lights over Hull, UK.I saw a low flying triangular shape craft lights were in a delta shape one leading light and three on each underside of delta shape in straight line. It was totally silent and glided over about 100 metres above. The size was approximately 20 to 25m wing span. The lights were an orange/red colour with a slight haze and underneath the craft, or whatever it was. Phone is useless in dark as tried to take photo but no image.This is my first sighting of a UFO.