This great article from the Financial Times May 2019 gives a pretty up to date view of the activities of GCHQ from it’s various sites around the UK. It also explains part of the reason why there is residential and commercial expansion in the area.
GCHQ is at the centre of Cyber Security Valley UK.
Bottom right is the ” Doughnut ” of GCHQ.
with Tyler Cohen Wood and Mark Whelan.
