May 9th – I popped into Birmingham to run a few errands and cycled in via Roman Road, Sutton Park, and then onto the North Birmingham Cycleway down past Witton Lakes. I returned via Plants Brook and Sutton, but more on that later.
I had business up at Constitution Hill, and on the way, I remembered these odd utility blockhouses marooned in the centre of the recently rebuilt St. Chad’s Circus. These substation-like buildings are the one solid remnant of the old subterranean subway complex; overlooked by the Catholic Cathedral, they are a chilling reminder of the cold war.
They are plant and ventilation installations for Anchor Exchange, a huge, sprawling, underground nuclear blast-proof telecommunications exchange beneath the streets of Birmingham. Mostly now abandoned, Anchor only exists as cable tunnels, having been rendered obsolete by the end of the communist threat and advent of the internet.
Anchor was built at the same time as Birmingham built the inner ring road, or ‘concrete collar’; the hated gyratory system that consisted of flyovers and tunnels called queensways. Birmingham City Council have spent 20 years now destroying the concrete collar, and putting traffic on the same level as the human city, but Anchor is still ever-present.
There were several entrance points to Anchor from these tunnels, and the complex was an open secret for decades.
It’s telling that long after its usefulness ended, Anchor still requires maintenance and support; this closed stairwell with it’s original rails on the right and peculiar textured facing is one of the only pieces of evidence left on the surface, belying what lies beneath.