David, G8UOD began by looking at European history prior to WWll. With the aspect of war looming, Britain began the necessary steps to have materials and systems in place.

A central exchange was built to serve as a communications hub known as Q Central. The complex was built at Leighton Buzzard and was the biggest telephone exchange in the world  from 1939 to 1945, handling all telephone and teleprinter communications for the war in Britain, Europe, North Africa, and the Far East.  David told of how the exchange was connected to it’s many out stations. The complex remained secret until declassified in 2008 and after 2013 the site was cleared and sold for housing.