Metalmuncher,
Ah, now I know what that aircraft is making that noise, but too far off to identify properly, it flying around the Eye Hoxne area.
A Harvard would regularly appear above Linden, a suburb of Jhb., and go through an aerobatics routine and dive bombing, this in the '50s & '60s.
Those two I saw where purring along, whereas an A6 sounds totally different.
Have only seen Concorde once, and that was when it was 'Showing the Flag' and touting for business.
It was doing a circle of Johannesburg, and my lasting memory is the noise its engines made, even though it was some distance away and in droop snoot mode.
Lucky man MichaelG!
Geoff – Never seen a V-Bomber much to my regret.