The City of London Corporation (note not council) is indeed within Greater London, but still has some weird hangovers from the medieval era, including the Templ

The City of London Corporation (note not council) is indeed within Greater London, but still has some weird hangovers from the medieval era, including the Temples and a strange and unique electoral system. It's the Corporation that is the main body administering the region. It is organised differently to anywhere else in the UK, and distinctly odd. The rest of the UK got rid of those few last remnants of the Middle Ages in the 50s through 70s, though nowhere had kept around as many as the City. https://en.wikipedia.org/wiki/City_of_London#Governance https://en.wikipedia.org/wiki/City_of_London#Governance