GCHQ Bude

Overview
GCHQ Bude, formerly known as the the GCHQ Composite Signals Organisation Station (CSOS) Morwenstow, is a satellite ground station located on the north Cornwall coast. It is operated by the British signals intelligence service (GCHQ) on the site of the former World War II airfield, RAF Cleave. Staff are drawn from GCHQ (UK) and the NSA (U.S.) and the station is operated under the UKUSA agreement, gathering data for the ECHELON signals intelligence (SIGINT) network.

Source

 * "GCHQ Bude," Public Intelligence (June 29, 2010) (full=text).