Postcode by Address is a UK postcode and geographical information website designed to help people find addresses, streets, places and postcodes across the United Kingdom. Its search function supports postcode and street lookups, while regional and postcode-area listings help users explore locations throughout England, Scotland, Wales and Northern Ireland. The site also highlights popular cities, including London, Birmingham, Leeds, Glasgow and Sheffield.

The service brings together several postcode and geographical sources to provide a reliable overview, and the website is updated regularly to keep its information current. Users can look up UK postcodes, post towns, streets and addresses, and discover nearby amenities and services such as supermarkets, train stations, schools and companies. Additional resources include a postcode generator, postcode and post-town information, frequently asked questions, and links to organisations and reference sites such as Royal Mail and the Post Office. Postcode by Address presents itself as a practical directory for finding UK locations and exploring what is nearby.