Very Odd ....
Not last Friday but for the previous 2 Fridays their has been a large Turboprop flying in circles around Sheffield ( looks like a twin ). It starts around 8pm and seems to go on for around 2-3 hours.
It's flightpath takes it almost directly over our house. I would estimate its height at between 8-12k feet.
The first Friday I saw it was the weekend of the Perseid Meteor show and that was the only reason I could think for it just flying in circles.
Any ideas ?