In WWII this facility housed a Rover "shadow factory" manufacturing parts for Bristol aero engines . In the 1960's the government created a top secret Regional Seat of Government in part of it.
In the 1980's in was upgraded to Regional Government Headquarters 9.2 (R.G.H.Q. 9.2)
When (in their wisdom) the government decided we no longer needed this nuclear bunker it fell into disrepair, now there is hope to create a museum in part of its 3.5 Miles of tunnels.