Living by the coast, I am used to the weather changing a lot, and the differing sky patterns, however what happened yesterday was extremely unusual. We don't get a lot of planes fly overhead, usually just light aircraft and the odd spitfire.
Yesterday morning was a beautiful morning with a completely blue sky. I then heard what sounded like an aircraft overhead flying backwards and forwards, and this has happened before, but they have never left trails like this, EVER!
I wasn't the only person to notice this, as the delivery driver said the same later in the afternoon when he dropped off a packaged.