As a long-term Scotland-resident (alien), AA do at least deliver cheap rate traffic charges based on Scottish bank holidays, rather than being based on the English dates.
RevK might even ask some staff if they would be happy to switch to Scottish date-pattern cover for all I know, if someone were to suggest the idea to him. I don't know, but RevK famously likes to "do things right". It's up to the staff really though.
I've said before that an AA-Scotland might be a fine idea.