New exhibition looks at the fascinating (yes, really) history of the Post Code

Something that permeates most of our lives but which we give hardly a thought to is the Post Code, that short set of digits at the end of an address that more than anything above it ensures letters get to the correct place.
And an exhibition about the history of the Post Code has opened, appropriately enough at the Postal Museum.Starting with one of the museum’s most asked questions, an introduction to how postcodes work, the exhibition jumps back to the beginnings of postcodes in London,