Fleet series is excellent, Joe Balkoski, the designer did a really good job back in time. He is also working on a new edition, but his Korean war will be the first out.
I see the UK more as an hub with possibility for some adventures, rather than a warzone. Basically if the entire world is a warzone, it became more of the same without any real distinction. Characters, settings, even enemies became cutouts of more of the same. Of course my two eurocents...
Oh, I loved Korean War. The playing time was short (well short for a wargame) so you could actually finish the game, even though the playing time tricked you a little bit because you thought that you could manage to play it in one day, but that usually ended up in two players just staring at the map wondering who's turn it is
Regarding UK, fine, but in that case, since it isn't one of the two main setting locations the backstory can be much shorter and also less colourful (some political history and some skirmishes). Dull perhaps, but such a "bland" location also opens up the possibility for someone to do a write up and release it through Free League Workshop.
But such a write-up can of course be done even if the UK current affairs stays in the setting as an alternative to the alternative so to speak.
To me, I am not that upset with the setting so far since it is in the outskirts of the main setting locations, the little direct effect it will have, I can control. It is also written in the player's manual. That info may be according to what the player's know or think they know. And if they change it, fine, I can live with that to, for the same reason.