Didn't hear that one, but used to hear them frequently I think it was around 1960's.

Here's a photo of an F/A-18 Hornet just as it broke the sound barrier

Ignore my last post, my mind is a go-slow today....

with so much heavy thunder lightning and large hail this afternoon it would have hard to tell what we heard some thunder was excessive in noise, unlikly to be the raf jet this way as we are very close to heathrow here.

I was told it was Samantha Cameron dropping her purse !

When an aircraft goes through the sound barrier, it generates the noise BUT, it's not a one-off, but follows the aircraft the whole time it's flying at more than Mach 1. Numpty in the heli was squawking the highjack code, which is why the jets were allowed to go at that speed overland.