The story begins with a Post Office radio station at St Albans that was secretly reporting German wireless traffic to the Foreign Office in 1932. By the end of 1938, the military authorities asked the Post Office to set up a network of eavesdropping stations – the first of which was built at Sandridge near St Albans.
The three Armed services each built their own networks but more secret still were those operated by the Foreign Office and MI5 and MI6 who successfully tapped directly into the highest levels of German Secret Service communications.
I guess that the info passed to Bletchley was unknown until decoded - it could then transpire that the Navy had unknowingly forwarded a message originated by the Luftwaffe etc.
Graham
Plan A is always more effective when the problem you are working on understands that Plan B will involve the use of dynamite
That answers that then, but Im from mthe fair city of St Albans and knew nothing about a GPO station at Sandridge, I wonder if it was an experimantal station? And was it involved with telegrams?
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