Creating and maintaining the National Geographic Database (NGD) is at the core of our public task. The NGD holds the location data that describes the geography of Great Britain, maintained to agreed accuracy, currency and coverage. This data is used across the public and private sectors to underpin a wide variety of products and services in the delivery of critical infrastructure and services – from blue lights to streetlights.

The NGD has these themes:

NGD theme	Definition of data available within the theme
Addresses	An address is a structured label, usually containing a property number, a street name, locality name and postal code. It’s used to identify a plot of land, a building or part of a building, or some other construction, together with coordinates indicating their geographic position.
Administrative and Statistical Units	Administrative and Statistical units are the geographical extent of administrative, legislative, regulatory, electoral, statistical, governance, service delivery and activity management areas.
Buildings	A Building is any roofed structure permanently constructed or erected on its site, for the protection of humans, animals, things, or the production of economic goods.
Geographical Names	Geographical Names provides orientation and identity to places. They are location identifiers for cultural and physical features of the real world, such as regions, settlements, or any feature of public or historical interest.
Height	The Height Theme describes the surface of the Earth relative to a vertical datum.
Imagery	Imagery is geo-referenced image data of the Earth's surface, from satellite or airborne sensors.
Land Cover	Land Cover represents the physical and biological cover of the Earth’s surface.
Land Use	Land Use is the current and future planned management, and modification of the natural environment for different human purposes or economic activities.
Structures	A Structure is any free-standing manmade construction, that is designed to stand permanently in one place and is not a building (for example, bridge, tank, mast, fence).
Transport Networks	Transport Networks are the suite of road, path, rail, air and water transport routes (ferry only) and their connectivity.
Water	The Water Theme covers the extent of all water features including rivers, lakes and marine features (and their connectivity).

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