I had been sky watching for hours and I had not seen any unidentified objects so I was feeling a bit disappointed. I had just watched a passenger plane pass over the area that had left a contrail behind it which had now begun to fade. I looked around the area of sky were the contrail was and to my amazement I spotted something that was slowly moving around directly beneath it. I immediately looked through my binoculars to see what it could be and to my surprise I could see that it was some type of structured mechanical craft. As I watched the craft flying around the sky near the faint contrail I could see that the craft was crescent shaped and had a round dome that was situated on the top of it. I quickly put down my binoculars and immediately grabbed my Sony HX-300 camera and took a photograph of the craft just before it flew up into some near by clouds where I lost sight of it. I was left wondering where this craft had originated from. It was definitely strange and I believe that all of the unidentified crafts that I have witnessed around this area are coming from the sea. The photograph was taken at 1:47 PM on the 13th of May 2020, at Newton Abbot Devon England. All the best John.