Bloody Good Idea
Everyone seems to be completely missing the point.
You do not need centimetre (I mean half-inch, bloody French measurements) levels of accuracy, you simply need to know whether you are in Blighty and safe, or Not In Blighty and likely to encounter potential immigrants.
That is the Gammon Positioning System - GPS, also known as Farage (named after the modern day visionary, not after some foreign bean counter from before the Empire).
Biting the hand that feeds IT
