Thermal footage of a strange object flying over the Bristol Channel in the UK has been uploaded online.

Recorded on Saturday by a police helicopter flying over the channel at around 9:30pm, the object was reportedly invisible to the naked eye and could only be seen through an infrared camera.

Circular in shape, the object appeared to be flying against the wind despite possessing no apparent means of propulsion and local air traffic control reported that it hadn't picked anything up.

To read more and view the video, click here.