The Llandaff Sub Control is located in Vaughan Avenue, Llandaff. The building is a single story surface brick blockhouse although it is now mostly hidden by trees, bushes and ivy.
The bunker was operational until the disbanding of the Civil Defence Corps in 1968. It remained in use manned by the Cardiff Corporation’s voluntary Civil Defence Organisation until 1984.
It was used as the Corporation’s County Standby Control until 1991 but it is believed it was never used with the exception of equipment storage.
Since it’s closure it has remained unused.