We’re all good to go with the UK ones (Wales and N Ireland).
I believe Ireland too, with these listed in the below post with the “County” prefix:
There is dispute over the naming of Londonderry, however this is apparently only an issue with the city and not the county therefore making it a non-issue for Ratebeer splits. So with this in mind I think Ireland is also good to go, hopefully other admins/users can confirm.
