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- What Is PostCode Lookup API?

As a service provider, and the owner of the application I would like to provide an option for the user to auto-populate the address after typing postcodes or outcodes – the first part of the postcode.
Postcode Lookup API from the APITier gets addresses for the given UK PostCode. This API provides a JSON interface to search UK addresses for a postcode.
Powered by the most accurate, continuously updated Postcode Data, covering 30m+ UK Delivery Addresses, and 1.8m UK Postcodes.
API provides the most accurate longitude and latitude, geocoding coordinates for the addresses to locate addresses on the Map.
Instantly start querying addresses by typing Postcodes or outcodes(first part of the Postcode)