Have just been trying to do some research on this issue as I was on board a Trident that did a flypast at Booker. Sadly I cannot remember much at all (not even the year) as I was only about 5 at the time! My dad was a manager at BEA then and the flypast flight I went on was specifically launched for the event. It was filled with only staff and their families/friends and everyone knew the purpose of the flight so there was little consternation about a low approach and flypast. The flight was LHR - LHR and that is about all I can remember about it, despite it being the very first time I ever flew. If anyone has any more details, or even a picture, then I would be most interested.