I had a similar experience 2, or possibly 3 years ago. I was in the garden when I heard the dull roar of vintage aircraft and there, coming in from behind my shed were two Lancasters and a number of Spitfires and Hurricanes. The second Lancaster was the Canadian one. They approached virtually head on to me at about 1000 ft. and then turned left for Bournemouth Airport. I live 500 yards from the big roundabout that is 4 miles north of the Airport and this is a well known turning point for the airport. A great sight, but most of all the NOISE!! Fantastic.
Buccaneer