The City of London is the exception, not the norm. The history of how it came to this situation is also pretty interesting (the City is what should be called Lo

The City of London is the exception, not the norm. The history of how it came to this situation is also pretty interesting (the City is what should be called London, not the rest of the city.) It's a less extreme version of what happens in Rome with the Vatican, which is a completely different country. But in either case, it's just one inclave. The article talks about jigsaws happening in almost every city.