OS NGD Documentation

Welcome to OS NGD documentation! Here you can learn how to get started using OS NGD data via OS Select+Build and the OS NGD APIs.

What's the OS NGD?

The OS National Geographic Database (OS NGD) contains authoritative data that describes the geography of Great Britain. It delivers improved data structures, increased currency of data supply and enhanced metadata.

🖥️ How do I access it?

There are two access methods for OS NGD data:

• OS Select+Build (the download service)
• OS NGD APIs

👥 Who can use it?

The OS NGD is available to OS Partners and to public sector organisations who are members of the Public Sector Geospatial Agreement (PSGA).

Short YouTube video explaining what the OS NGD is.

What's available on this site?

This self-serve site is where you will find documentation to help you get started using OS NGD data via the download service of OS Select+Build and the two OS NGD APIs. Using the left-hand-side navigation menu, you can select and view pages and sections of interest, including:

✨ OS NGD Key Benefits to Customers

Find out what the key benefits of the OS NGD are.

🗺️ OS NGD Sample Data

Download OS NGD sample data or visualise it online.

📣 OS NGD News

Learn about new data enhancements and service updates released for the OS NGD, the change log, improvements, planned future data enhancements and recent announcements.

⚙️ Data and Service Status

Find out about OS NGD planned maintenance, any live service disruption, current data issues and resolved data issues.

📖 OS NGD Fundamentals

OS NGD Fundamentals covers the core elements of OS NGD design, including available data formats and file naming, data schema versioning, access methods, data ordering and currency, attribute information for feature types, unique identifiers and coordinate reference systems.

▶️ Getting Started

Our getting started guides will help you access, use and style OS NGD data. You'll also find in-depth information on OS NGD design, and webinars, tutorials and case studies.

❓ FAQs

View frequently asked questions about OS NGD data and access methods (OS Select+Build and OS NGD APIs).

🗃️ Data Structure

Learn about the OS NGD data structure and the data available for each theme, collection and feature type.

📝 Code Lists

Access all of the code lists for the OS NGD.