http://e-space.mmu.ac.uk/610692/2/Dr...iety_paper.pdf has a lot on Urban plans in the '50's
but search on UK eventually brought up Birmingham
https://en.wikipedia.org/wiki/Hay_Mills_Rotor_Station which was apparenly in use 1951-54 -ish.................
https://birminghamhistory.co.uk/foru...station.21825/
Lets wait until 2020 for the next challenge!!!