Flying saucer caught in Newton Abbot, GB

On August 18, 2015, a witness was looking sky. Suddenly, he has noticed an impressive flying saucer among clouds. What is it?

Witness statement:

“‎I was sky watching looking though my camera viewfinder when I spotted a flying saucer that was very high above some clouds. I quickly took a photograph of the flying saucer before it flew off at high speed. The Photograph was taken on the 18th of ‎August ‎2015 at Newton Abbot Devon England.