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.
IF there is an aeroplane in that vicinity, then MACC [Manchester Area Control Centre] know nowt about it....
watp,iktch