After my recent posing about 'best fun', I suppose it's obligatory to ask the opposite.
With this question I really didn't have to think for more than a split second. Without question it was my time spent on The London Stock Exchange.
I had turned down an offer to study Architecture, and on that final day at school I really didn't know what to do. It was a couple of good school-friends who suggested I join them in The City, and I soon secured myself a position with one of the oldest firms of Stockbrokers in London. I was to become a 'Blue Button', a trainee stockbroker. (I tried to find an image of a Blue Button on Google Images, but such images from the mid-60's seem not to exist)