[1] It is a culmination of Local Land and Property Gazetteers (collectively known as the National Land and Property Gazetteer (NLPG)) and other datasets: Address Layer 2 (AL2) and Royal Mail PAF data.
The LLPGs, which make up a portion of the data, are created and maintained with input from all local authorities in England and Wales.
The National Address Gazetteer infrastructure is the single source from which the AddressBase products from Ordnance Survey are developed.
GeoPlace is an organisation (LLP) that oversees the production and maintenance of the National Address Gazetteer.
GeoPlace is joint owned by the Local Government Association and Ordnance Survey.