Don Bullock's denouement at Biggin was September 1980 so, unless it was Keith Sissons (did he fly as low?), must have been the 70s.
That Lodestar prang is interesting, looks more like a loss of control than a deliberate low level turn. There is some video out there of an Invader doing much the same thing a few years ago after losing an engine on take off.
Edit - it was
this one.