Visited Hounslow today to deliver roofing materials to a 60/70s concrete construction that is being renovated and was directed to drive into a basement unloading area. To my surprise, built into the floor, was a turntable (out of use) designed to turn lorries. I assume it was used to enable lorries to be directed onto bays, and to be turned around in the limited space available. Certainly Asda and Waitrose use them at some RDCs and one was used at Kings Cross. I am also led to believe that the Midland Bank on Threadneedle Street had one to allow bullion vans to be directed onto a lift inside the bank, though I stress this is apocryphal. This got me wondering what other locations utilised turntables for purposes other than railway use. Huddersfield had one for turning trolleybuses and I believe there was one on a canal for turning barges. Of course car showrooms use them for displaying cars but I am talking more commercial or unusual applications.