FWIW, UK postcodes have a very strict and well defined format: https://wikipedia.org/wiki/Postcodes_in_the_United_Kingdom#Format https://wikipedia.org/wiki/Pos

FWIW, UK postcodes have a very strict and well defined format: https://wikipedia.org/wiki/Postcodes_in_the_United_Kingdom#Format https://wikipedia.org/wiki/Postcodes_in_the_United_Kingdom#F... Also, something not many people know is that any postcode in the UK has a maximum of 100 addresses in it. You can tell I've been writing a search algorithm for UK address data recently ;)