Why does the united-kingdom tag exist?
I would think that makes any question tagged with it "too localised"…
As mentioned questions are not supposed to be geographically localized unless there is a compelling reason for the localization (e.g. if you were researching an art style from a particular province or location).
If that compelling reason doesn't exist then the tag shouldn't either because it just leads to people using it incorrectly at a later date. I'm not convinced that asking for a statistical answer and then limiting it to the UK is a good enough reason to introduce the tag.