Flying saucer caught in the sky over Stoke on Trent

On March 15, 2017, an inhabitant of Stoke on Trent (England) has seen and caught a bright disc-shaped UFO flying in the sky. What is it?

Witness statement:

At 10.32am I went to open my bed room window as it was a nice day. I was looking out of the window and I had noticed a bright object with contrails moving in the east. The object was moving at a fast speed and it had no sound. It was a disc shaped object. So I got camera tooken a photo of the object.