Nice thread!
At White Waltham in May 1977, at the Silver Jubilee display, a VC10 of BOAC opened (I think opened) the show.
His approach from the Woodley end got lower and lower until at about 1/2 mile distant he was down to around 15-20 feet (the tail was a bit lower!) and flew across the airfield showing what was in "ground effect". The aircraft was G-AVRM and flown by a Captain (Smith?) who was to retire from BOAC the next week. His "swan song" I guess. There is a picture of 'RM's' flyby in the bar at White Waltham to this day.
That, without doubt, was ALMOST the best I ever saw. However, the SKYBLAZERS in their F-100's at Biggin in the early 70's came across on a low run that took my breath away. No 4 in the box was just a few feet above the runway and, as usual, they were only a foot or two away from each other. Two great moments that will live with me forever.
Perhaps the VC10 was the biscuit after all.
Maybe it's at Brize - eh BEagle?