Where I work, about 10 miles South of Ashford, there is wide open countryside, often get the RAF doing low level flying though there, but today was different.
This morning a lone Spitfire flew over low, heading towards Lydd. In the afternoon I heard a drone and saw a tight formation of 3 Spitfires go by, as I watched them I was aware that they were turning back and that a helicopter was hovering above them no far away, then time and time again they would sweep by, passing under and over the helicopter from all angles. This went on for at least 30 mins ............ work had to stop. Later on I saw the helicopter had returned and that it had a large remote camera on the nose, soon the Spitfires returned only this time they were doing the works, big loops all in the same tight formation, coming over us on every pass, another 30mins or so.
I seems these were The Horsemen who are making their debut as a Spitfire display team at Duxford this weekend, check out this link;
http://www.airshows.org.uk/news/2013/06/airshow-news-a-worldwide-debut-an%E2%80%8Bd-some-1940s-nostalg%E2%80%8Bia-at-the-flying-leg%E2%80%8Bends-air-show%E2%80%8B/