I'm an architect - well, retired. And I'm so old I actually remember computers in the beginning. In fact, my school dictionary doesn't have the word ‘computer’ in it!

So anyway, I did the new computer centre in Barnsley - converted the old courthouse, persuaded them not to pull it down, and when it was cleaned they were absolutely delighted, and the roof was actually red, not black! “Eeh, it’s bloody reet!” he said. “We’ll have a proper do! We’ll open it up with the best bloody banquet in here that you can think of – with the mayor, the lot!”

So I’m taking them all round, a young architect – pride comes before a fall. And I'm taking people around and showing them all around. This was the computer hall, in fact the computers are boring, they were just two cabinets - reel-to-reels in those days, printers going, a hive of activity. And I says “Here we are. This is a Honeywell computer, which is designed in America. It's made up in Scotland, but their alternating current alternates at 50 hertz per second as opposed to ours at 60 hertz.” “Oh, what a clever young man!” “So what we have to have here, you see, is a separate line of circuits…” (mimes gesturing)

And the world stopped. Harry Potter, Gandalf, had nothing on me. And I looked across, I couldn't talk - I'd hit the emergency stop button that I didn’t even know was there! And I was ostensibly in charge, and my assistant says “Sorry, I forgot to tell you we put that in!” But it was at mid-height! The chances must have been a million-to-one that I’d hit this one button in the wall. I thought I’d wiped all the records off for Barnsley – I hadn’t actually – I couldn’t move, I was frozen.

I didn’t want to go to the banquet and the mayor decided to feature me: “Here he is, the lad that hit the button!” I never lived it down. “Hit any good buttons lately, T?” Nice one!