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MoD CORSHAM: GPO Telephone Exchange is a Cold War-era underground telecommunications facility located near Corsham in Wiltshire. Constructed during the 1960s, the exchange was built as part of civil defence preparations and served as a protected telephone switching centre designed to withstand nuclear attack. The facility comprises a substantial concrete bunker structure built beneath the surface, equipped to maintain essential communications infrastructure in the event of war. As a purpose-built telecommunications bunker from the height of Cold War tensions, it represents an important example of mid-twentieth-century defensive engineering and the state's investment in resilient communications networks during the nuclear age.
MoD CORSHAM: GPO Telephone Exchange is a scheduled monument protected by Historic England under reference 1409129. View the official record →
MoD CORSHAM: GPO Telephone Exchange is a Cold War-era underground telecommunications facility located near Corsham in Wiltshire. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1409129.
MoD CORSHAM: GPO Telephone Exchange is a Scheduled Ancient Monument, legally protected by Historic England (NHLE) — the body responsible for designating and safeguarding heritage sites in England. The official designation reference is 1409129.
Several scheduled monuments lie within 10 km, including MoD CORSHAM: Prime Minister's Rooms and Operations Rooms (0.2 km), MoD CORSHAM: Quarry Working Areas in West Lung, Spring Quarry (0.8 km), Three bowl barrows 160m south west of Hatt House (2.5 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of MoD CORSHAM: GPO Telephone Exchange's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
MoD CORSHAM: GPO Telephone Exchange stands on Great Oolite Group, bedrock that formed in the Bathonian. The rock here is sandstone, limestone and argillaceous rocks.