 In 2010, the National Security Agency paid GCHQ £15.5m for redevelopments at the site.In 1963, TAT-3, an undersea cable linking the United Kingdom to the United States, was laid from Tuckerton, New Jersey, US to Widemouth Bay, Cornwall, just south of the site at Cleave Camp.The British General Post Office (GPO) routinely monitored all communications passing along the TAT-3 cable, forwarding any messages they felt were relevant to the security services.