come to think of it, the people of the UK don't have a proper demonym

like, you can call someone "british", but "britain" itself is a complicated term, because "great britain" excludes northern ireland and all the smaller islands that are also part of the UK, and "the british isles" also includes all of ireland

and a lot of people in scotland really don't like being called "british"

this is basically the same problem as with the word "american", but even more complicated

nobody's ever gonna call someone else a "unitedkingdomian"