GCHQ marks 100 years by unveiling details of wartime spy work

The spy agency GCHQ is celebrating its centenary on Friday by highlighting little-known wartime eavesdropping and decoding work that took place in five secret locations around the country, from the Kent cliffs to the Derbyshire countryside.
That includes the dangerous work undertaken daily by about 50 linguists, many of whom were women, who listened in to shortwave German naval and airforce radio at Abbots Cliff House near Dover, a site exposed to enemy attack.
Or at Marston Montgomery, a base headed at one point by the agency’s first female commander, Pamela Pigeon, a New Zealander who took over operations in 1943 in a series of wooden huts hidden in the countryside.