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About the Ordnance Survey Linked Data dataset

What is this Dataset?

The data described here is a combination of 1:50,000 Scale Gazetteer, Boundary-Line™ and Code-Point®. It has been combined to allow more flexible access for Linked Data applications.

Here is a summary of each product used in this combined dataset.

1:50,000 Scale Gazetteer

1:50 000 Scale Gazetteer contains over 250 000 place names and is the most detailed gazetteer available.


Boundary-Line™ contains all levels of electoral and administrative boundaries, from district, wards and civil parishes or communities up to parliamentary, assembly and European constituencies.


Code-Point® Open contains postcode units for Great Britain, each of which has a precise geographic location.

There are approximately 1.7 million postcode units in England, Scotland and Wales. Each contains an average of fifteen adjoining addresses.

How is it Produced?

Each product is produced separately and then combined especially for the Linked Data pages.

1:50,000 Scale gazetteer

1:50 000 Scale Gazetteer is a list of distinctive place or feature names from 1:50 000 Scale Colour Raster, with location information. This enables you to easily locate places on the map, geocode your data and build search functionality into applications.

1:50 000 Scale Gazetteer contains entries for airports, farms, hills, woodlands, commons and other places, including over 42 000 cities, towns and settlements with coordinates to 1-km resolution.

1:50 000 Scale Gazetteer has the following features:

  • National coverage is held in one seamless file, enabling you to find locations quickly with minimal data management.
  • It contains every distinctive name featured on the 1:50 000 Scale Colour Raster product.
  • It is updated in conjunction with the 1:50 000 Scale Colour Raster revision cycles, giving product consistency.
  • Highly detailed, containing over 250 000 names, from farms to cities.


Boundary-Line™ provides administrative and electoral boundaries and their names for England, Scotland and Wales. Boundary-Line represents the hierarchy of boundaries in Great Britain.

Boundary-Line for England and Wales was initially digitised from Ordnance Survey's boundary record sheets at 1:10 000 scale (or, in some cases, at 1:10 560 scale).

The 1:10 000 scale published mapping has been progressively withdrawn as it is replaced by OS Landplan®.

Boundary-Line now uses this as the source document, occasionally mapped against large-scale sources.

The Government Statistical Service (GSS) codes are supplied by the Office of National Statistics (ONS) and General Registers of Scotland (GROS).


Code-Point® Open contains a list of all the current postcode units in Great Britain, each of which has a precise geographic location at a resolution of 1 metre.

Where can I find Quality Information for this Dataset?

Quality information for the products can be found in the relevant documentation stored at: