I was almost in shock when I seen two low flying 747's coming over my small town (nearest airports were Bristol about 30 miles away, and Cardiff about 40 miles away). Two 747's side by side, flying really low, it was found out that one was refuelling the other one whilst in the air.3
Apart from that we regulaly have RAF fighter jets, chinooks etc flying over as there is an army base about 2 minutes from my house.