The Canberra's debut at the 1949 Farnborough air show, with Roland Beamont at the controls, caused a bit of a stir. Beamont threw the plane around in an aerobatic routine that stayed almost entirely within the aerodrome perimeter.
The next morning, Beamont was hauled in front of the display control committee and told to "tone down" his flying. He asked what that meant exactly and when they failed to be specific he inquired if they thought it had been dangerous. They said no, not
dangerous exactly, but, well, just tone it down.
Looks like Roly Falk forgot to read the memo when he barrel-rolled a Vulcan straight after taking off at a Farnborough show a few years later.