[0] http://www.columbia.edu/~fdc/postal/#europe "After World War II and up until the mid-1990s, all European postcodes included country-code prefixes. These were originally United Nations "car codes" (one, two, or three letters), kept in an annex, "Car (Or Road) Distinguishing Signs", to the 1949/68 United Nations Conventions on Road Traffic, adopted in part by the European Conference of Postal and Telecommunications Administrations (CEPT). These codes were not accepted by the Universal Postal Union as a world standard, but were widely used anyway."
...except for Great Britain, who were one of the first few other countries to be connected to the internet, and decided to use .uk before people realised that every country would need one, and using already-assigned ISO codes would be the best way to hand them out.
But is the mail in the source country sorted by people, computers programmed by people, or by the ISO committee?
Someone
BTXX XXX
GB
...would probably get there, it would technically be incorrect. Mind you...
Someone
BTXX XXX
UK
...might not get there either, if your postie was a dyed-in-the-wool republican!
