This video by CGP Grey is an entertaining overview of some of the oddities of the City of London: https://m.youtube.com/watch?v=LrObZ_HZZUc&pp=ygUPY2dwIGdyZXk...

I also worked (and indeed lived) in the City a few years and fell down this rabbit hole for a spell. The more you dig into this the weirder it gets, but it's quite a fun rabbit hole indeed. :o)