I know of two (outside of London, I don't count London) - I'm going to do a shout out at some point - but not until I've got a few more decent posts under my belt - I've got a bit too obsessed with understanding how this site works over the XMAS post and need to stop just posting posts on steemit which are about steemit....
Do you mind if I follow in your footsteps and repeat your project btw - it's such a good idea! I'll give you full credit in every post of course! And it would be a good test of reliability.
I might knock up a future post about the whole sociological methodological side of things - it's extremely interesting - qualitative analysis versus purely quants!
P.S. I don't imagine starting off was that productive, if your 'a' followers look like mine...