Humour. I meant to include a
Perhaps the biggest problem was not warding off a Soviet SF pre-invasion force but countering the extensive spy network. Here is one typical building incorporating a variety of spy equipment, some of which was hidden under the internal floor. A lot of ballistic submarine details were copied and smuggled out using microdots.
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Many years ago now, I worked picking elderly and disabled people up and running them all around the Borough. Many of the routes were regular ones that we drove often five times a week twice a day as we picked people up and then later dropped them back home.
One such pick up was in Shenley Avenue in Ruislip and the route to it was through Cranley Drive. I’ve driven up that road hundreds of times and never knew of it’s connection to Cold War spying etc.
Small world sometimes!