🆕OS ESG Overview
This overview introduces the OS ESG and gives context for all users – highlighting key features, providing examples of potential uses, and listing details such as supply formats, currency, etc.
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This overview introduces the OS ESG and gives context for all users – highlighting key features, providing examples of potential uses, and listing details such as supply formats, currency, etc.
Last updated
Was this helpful?
The OS Emergency Services Gazetteer (OS ESG) is a single centralised source of critical information that allows first responders to precisely identify locations when the need is greatest.
It was developed in collaboration with the Emergency Services, who provided invaluable feedback. It provides enhanced data, such as road and motorway junctions, that improves incident response, incident reporting and situational awareness.
The OS ESG offers a national view for Great Britain (i.e. England, Wales and Scotland).
The key features of the OS ESG product are:
Easy to filter and apply features: The OS ESG is easily filterable so you can select the features that you are interested in based on the classifications allocated to those features.
Enhanced data for incident response and reporting: The gazetteer provides a single centralised source of information which allows for easier, faster and more precise identification of incident locations.
The OS ESG enables emergency responders to be more accurately informed, improving emergency response times and public safety:
Quick and accurate gazetteer searches
Supports incident reporting and planning (for example, giving more accurate emergency response times)
Enhanced data sharing across emergency services
Supports incident and risk analysis and modelling (for example, analysing trends and patterns of road traffic collisions to both help identify risk and support incident planning)
Improves operational reporting
The OS ESG is published in the AddressBase Premium format and aligns fully with requirements specified during extensive user engagement. This is to ensure ease of use for the Emergency Services already consuming OS Address data in this format.
The following datasets are available within the OS ESG:
Name and Location of Road Junctions
Road Junction features will be provided for junctions where two or more named or numbered roads intersect. For junctions which have an official name or number, the official names will be provided where identified.
Geographical Names
A subset of Geographical Names features, such as named water and named geographic features, will be provided in the OS ESG. Extensive features greater than 20km² will not be provided.
Bridge Interactions
Additional attribution for Bridge features which identifies interactions between any networks passing over and / or under a bridge. Please note that to avoid duplication, bridges with a unique property reference number (UPRN) in the National Address Gazetteer (NAG) won't appear in the OS ESG data; however, they will still be shown in OS Addressing products.
🆕 Tunnels
OS ESG Tunnel centroid point features are provided for all tunnel features in OS NGD Compound Structures.
OS ESG Tunnel portal centroid point features are provided for a subset of tunnel features in OS NGD Compound Structures. Tunnel features of classification Subway or Pedestrian Tunnel portal will not be provided where the tunnel feature is less than 75m in length (Where length is defined as the longest straight line distance between any possible portal points). Please note that to avoid duplication, tunnels with a unique property reference number (UPRN) in the National Address Gazetteer (NAG) won't appear in the OS ESG data; however, they will still be shown in OS Addressing products.
Please note, the content of this table is subject to change with future releases of the product.
This overview includes the following sections:
A helpful introductory Lightning Talk on the OS ESG is available on our 'More than Maps' site (a self-serve site that provides a one-stop shop for all your OS technical geospatial support, including tutorials and demonstrators).
