(in the same way .vegas and .miami aren't)
Just as the United States is a (sovereign) state, that is made up of multiple states.
I can't promise it's any more accurate, but it amuses me.
But really - we like to think there's a sensible definition of what a country is. There isn't. What makes Scotland a country and not Montana?
I'm in Ireland, the examples get even more convoluted. For some sports we field a team as a UN-recognised nation-state. For some sports we field a team as an island. If you're born on the island to parents who are citizens of the island, you can claim an Irish passport - whether or not you were born in the country of Ireland. Sometimes it's a geopolitical entity, sometimes it's a geographical entity, sometimes it's a political entity. Sometimes it's not even green.
Is the UK a nation? Is the US a nation? Is the Navajo Nation a nation? Is the UK a country? Is England a country? Is Malboro Country a country?
My passport says "United Kingdom of Great Britain and Northern Ireland". But I'm not convinced Great Britain is a United Kingdom (England and Scotland legally are, Wales may be a principality depending on who and when you ask), and I'm not sure if Northern Ireland was ever a Kingdom (Ulster perhaps, otherwise it's not a kingdom, but the remains of a king's claims).
Nationhood is almost as convoluted as the modern take on gender. You can self-identify as anything you like if you have an army to back you up.
Wouldn’t it be fair to say that the UK is synonymous with England in this case?
Exhibit A, that I have at hand. Rainfall gauges for only England using the UK domain:
https://check-for-flooding.service.gov.uk/rainfall-station/2...
Except for the City of London. Here, a combination of the Victorian power of the Corporation, coupled with the tiny resident population of the City (and a consequent desire by central governments to leave elections in the effective hands of the companies who employ people in the City rather than those who live there) have left a body allowed to take its own direction. Along with the Council of the Isles of Scilly (weird because Scilly is far too small to justify its own principal authority, but too far from Cornwall to be conveniently governed by it) it is one of only two really sui generis principal local authorities in England.
[0]: https://en.wikipedia.org/wiki/Municipal_Corporations_Act_183...
"the City of London shall have all its ancient liberties by land as well as by water"
These liberties being "ancient" even in 1215 AD means they date back to "time immemorial"[1] (that is, before 1189 AD) and thus their exact nature is not known. As such, replacing the legal basis for the City would likely have contravened or at least complicated the interpretation of that foundational document.
[0] https://www.cityoflondon.gov.uk/things-to-do/history-and-her...
[1] https://en.wikipedia.org/wiki/Time_immemorial#English_and_Am...
To give an example, it was only in 2008 when the island of Sark abolished the feudal system (the last place in the western world to do so).
https://www.legislation.gov.uk/asp/2000/5/notes/division/1/2...
"Vassals will become owners and superiors will disappear."
(A bit over simplified, of course)
https://www.parliament.scot/about/history-of-the-scottish-pa...
The fact England doesn't have a devolved government is insanity to me, but people were really pissed at Blair when it came time to vote on it... so here we are.
England, Scotland, Wales, and NI are called “countries” for historical and traditional reasons. They are not “countries” by any internationally applicable definition (if they were, then the states of the US, the provinces of Canada, etc. would all count as “countries” too by any such definition I can imagine).