The structure of a postcode is two alphanumeric codes that show, first, the Post Town and, second, a small group of addresses in that post town. A full postcode is known as a 'postcode unit' and designates an area with several addresses or a single major delivery point. They are alphanumeric and were adopted nationally between 11 October 19, having been devised by the General Post Office ( Royal Mail).
Postal codes used in the United Kingdom, British Overseas Territories and Crown dependencies are known as postcodes (originally, postal codes). Map of postcode areas in the United Kingdom and Crown dependencies, with links to each postcode area Please discuss this issue on the article's talk page. Please read the layout guide and lead section guidelines to ensure the section will still be inclusive of all essential details.
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