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OS OpenMap – Local

OS Open Map – Local (OML) is an open dataset of detailed, street-level mapping of Great Britain. OML provides one of the most detailed generalised open mapping products available and is designed to provide contextual mapping for your applications or web pages. It offers users a clear contextual view of the world whilst also enabling the undertaking of analytical activities.

This product is updated every six months in April and October.

OS OpenMap Local data displaying a detailed street level map
OS OpenMap Local data

OS OML can support a wide range of customer applications that utilise geographic information. The product is ideal for providing backdrop mapping on websites and displaying business locations on small-scale 'street level' maps.

Contextual backdrop mapping

The product provides contextual backdrop mapping for your applications or web pages. It contains important buildings, functional sites and greenspace.

Vector version

Vector data map styling is highly customisable to suit your needs; premade stylesheets are also available for Ordnance Survey’s traditional styles.

Raster version

OS OpenMap – Local includes a raster image option, carefully styled according to customer feedback. This is easy to load in a GIS and lets you start analysing data quicker.

Private roads and tracks

To help you navigate around Britain, we’re adding more names, such as those of isolated homes and farms, and roads, both public and private. This detail comes into its own in rural and suburban areas.

How to get this product

Access to this OS OpenData product is free through the OS Data Hub.

Visualise OS OpenMap – Local data online

This product is available to try out free online using one of our three sets of sample data (Exeter, Newport and Inverness) through the OS MasterMap Product Viewer:

What's next?

To access additional documentation and resources relating to this product, please refer to the following:

New users should start with the Overview to gain high-level insight into the product. The Getting Started Guide will help you to begin using product data in different software systems. The Technical Specification contains detailed technical insights.

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