Ahh, brings back memories. I started my career at DEC (which morphed into Digital->Compaq->HP :-( I got out during the start of the HP session) at the facility in Ayr. Concorde used to regularly test at Prestwick Airport (a few miles away), assume pilot training. It was the norm for the offices to take a break and go out to watch Concorde circling above, or flying out over Arran. We knew it was testing due to the noise!