i saw this broadcast at the time - we watched the takeoff on tv and then ran outside as it flew over our house three minutes or so into the flight. in the broadcast at 4:30 there is a map of the flight path - we were under the first arrow after chepstow. we could certainly hear it coming - if i remember correctly we actually heard the takeoff five miles away through the open front door at the same time as watching it on tv. the broadcast doesn't convey the full noise. in the previous year or two we could often hear the roar of the engines in the testbed at filton - heaven knows what it was like for the houses bordering the airfield. but the truth is that people were proud of it - the american protests against the noise were incomprehensible to us. we liked to hear it. the engines on the final production planes were somewhat quieter and less smoky.