Scarborough
GCHQ Scarborough is the longest continuous serving site for signals intelligence in the world.

The site in the rolling hills of North Yorkshire produces intelligence on a wide variety of subjects from Counter Terrorism through to Serious and Organised Crime and the protection of our Military whilst they are deployed overseas. A newly created Research and Innovation centre provides innovative cutting edge solutions to intelligence questions and communications challenges.
The original station dates back to 1912 when the Royal Navy established a Wireless Telegraphy station in the Scarborough area. However, it relocated to the present site in 1943 at Irton Moor just two miles from the main town on the North Yorkshire coast.
You can read more about the history of signals intelligence in Scarborough.