As a kid, used to holiday in Devon--mid 60's--went to the Plymouth Air show one year----enter one Lightning at the end of his display---got lower, and lower and faster and faster---and we all felt the wave as he went past the crowd --magic !
As an apprentice, "enjoying" the delights of Mid Wales and little place called Llangurig----stood listening to a "very self important" P/O one day who was blissfully unaware of the F-4 approaching behind him--watched the speed increase--and the height decrease----and the beast got VERY low as he went over the camp sight--to put it mildly--the expression on said P/Os face however could be best described as "gobsmacked" !
By a quirk of fate, had the pleasure of a reprise about 2 years later--this time as a pax in the back seat of a Gnat---flown an individual whose pre-flight brief was "do you want to have some fun then ? "--and he / we did !.
An ex Hunter guy as I recall.