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 Why have a separate section for the home countries/constituent parts 

There is a section in this article that enumerates the various subdivisions within geography corresponding specifically to the constituent parts (i.e., Scotland, England, Northern Ireland, and Wales).  In an apparent inconsistency, the article makes clear that the official subdivisions of the UK do not conform to the most widely known vernacular subdivisions (i.e., Scotland, England, Northern Ireland, and Wales).  Nonetheless, the section goes on to enumerate the various subdivisions within these constituent parts.  Can anyone in a position to do so please explain why this article is so structured?  Notice also that the section previously bore the vacuous sub-heading ""In the United Kingdom"".  Where else but *in the United Kingdom* would you expect to find subdivisions of the United Kingdom?  The section has since been renamed to ""Subdivision in the Constituent Parts of the United Kingdom"", but it remains an oddity given most of the statements in the article.   "