Telephone exchange, now a museum. 1939 with later extensions. Taken out of service 1979. Retains original built-in automatic exchange equipment invented and designed by Mr Strowger and made by Siemens Brothers. The exchange also contains an early mobile exchange, which could be installed to give up to 100 self-contained lines at very short notice. The buildings former generator room survives as do recreational facilities rooms.
The building also contains a "shelter" installed during the Cold War era to provide protection for those manning the station during a nuclear attack.
It now (2002) houses the Institute of British Telecommunications Engineers Museum of Telecommunications. (1)
(1)

<1> DOE, Listed Building Description (Published document). SNT228.

<2> Historic England, Listed Buildings Online (Unknown). SNT2439.

<3> Historic England, 2021, National Record of Historic Environment (Digital archive). SNT5271.