I've been to London too, in the 1960's. It's about halfway between Detroit and Toronto... I must have been there out of season because I never did see the famous London fog.
Did you know that the Thames, which flows through London, empties into Lake St. Clair? And that a sea lion escaped from the London Zoo, swam down the Thames and was cavorting in the waters of Lake Erie before finally being picked up in the waters near Sandusky, Ohio? Of course, that was over 50 years ago... It's true. I of course was much younger then.
Guess I'll have to shelve this project and go to bed.