On 2016\01\21 16:41, Recliner wrote:

The strange anomaly is Middlesex, which has been entirely absorbed into
Greater London,

Not quite... Potters Bar was handed over to Hertfordshire.

but whose name persists in postal addresses in some
boroughs, but not others.

There is also a Middlesex Football Association and presumably countless
other societies. There are also new Middlesex signs that have been put
up at the border within the last few years. Here's one..



It's also odd that places like Bromley still pretend to be in Kent, though
at least Kent still exists, unlike Middlesex.

Middlesex still exists, it just doesn't have a council. It existed for
hundreds of years before it had a council.