Hello
I am searching for for UK subdivisions polygons in poly format as it can be selected on Polygon creation page.
Many of the counties cannot be found at OpenStreetMap Nominatim_ Search.html. I would prefer one page, where everyting is available.
The name “Resort Hotel” is I suspect something descriptive that someone has made up, but the rest is correct. Wales has unitary authorities so there is no Gwent council any more. Wikipedia has the details at https://en.wikipedia.org/wiki/Gwent_%28county%29 .
If you really want the geometries for historical counties you’ll probably need to get them from somewhere else but are you sure that’s really what you want?
According to the document you quoted that list is the 1974-2006 list.
The table ‘Wales - changes of 1996’ indicates for example that Mid Glamorgan was split between Merthyr Tydfil, Rhondda Cynon Taff and Vale of Glamorgan.
The current divisions are the right hand column of that table.