The London Blitz brought a requirement for the British Government to relocate the GHQ Home Forces communication facilities from Whitehall to a remote site, away from the destruction of the city.
A quiet country house with a surrounding golf club was chosen for the site of the new signals bunker, consisting of two parallel tunnels 100m long, linked by a service tunnel between.
The signals facility was later used as the Rear HQ of the Supreme Headquarters Allied Expeditionary Force and became a major component in the planning of the Allied invasion of France in June 1944. With the success of D-Day, staff followed-up onto the continent, leaving the bunker vacant and without purpose.
The empty tunnels can now be found beneath the golf-course car park but any access routes have been sealed.