The National Underground Asset Register (NUAR) is here to assist asset owners' contractors

Access to the NUAR service is available, by invite, for authorised contractors working directly on behalf of asset owners

2 minute read
NUAR is a government digital service that provides instant access to a map of underground pipes and cables in England, Wales, and Northern Ireland, here to complement and enhance existing safe digging practices. The implementation of this means that, for the first time, there will be a single authoritative source of data about the underground pipes and cables in an online map.

A new blog explains how the National Underground Asset Register (NUAR) is being made available to authorised contractors working on behalf of asset owners, helping to improve safety and efficiency when carrying out excavation and street works. It outlines how NUAR brings together underground utility information from hundreds of organisations into a single, secure digital map, giving users faster and clearer insight into what lies beneath the ground.

By providing near‑real‑time access to buried infrastructure data, NUAR reduces the need for contractors to request information from multiple sources and supports safer planning and delivery of works on site. The blog also clarifies what NUAR can and cannot be used for, reinforcing its role in supporting statutory duties and safe digging practices rather than commercial or land‑use decisions.

Finally, it sets out how contractors can gain access to NUAR through the asset owners they work for, encouraging greater adoption across supply chains. As coverage continues to grow and more underground assets are mapped, NUAR is positioned as an increasingly valuable tool for contractors seeking to work more safely, confidently and efficiently underground.

Read the full NUAR for contractors blog

Find out how contractors working for asset owners can also benefit from NUAR


Ordnance Survey
By Ordnance Survey

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