OS Net positioning data

Highly accurate Global Navigation Satellite Systems (GNSS) data

What is OS Net positioning data?

OS Net is Ordnance Survey’s network of GNSS base stations across Great Britain, delivering real-time and post-processed correction data to support accurate surveying, mapping, and geospatial applications.

Features of OS Net

High-accuracy GNSS

Achieve centimetre-level precision positioning, with post-processed GNSS data integrated directly into your field and office workflows, via API or download.

Full national coverage

Benefit from multi-constellation GNSS support across Great Britain, powered by ~120 base stations.

Efficient on-site surveying

Capture precise coordinates with a single GNSS receiver, optimising operations and reducing costs.

Trusted by government and industry

Supports critical applications for the National Geographic Database, HM Land Registry, Met Office forecasting, and autonomous systems via commercial partners.

Sector-ready intelligence

OS Net delivers dependable, high-accuracy data and reliable precision positioning, for applications such as surveying, geospatial research, construction, agriculture, automated systems and beyond, with centimetre-level precision.

Access OS Net positioning data

To access OS Net RINEX data, register for the free 'OS OpenData Plan' via the OS Data Hub.

  • OS Net RINEX data

    Recorded OS Net data is freely available in standard RINEX (v3) format. Hourly files at 30 second rate.

  • Further details on OS Net RINEX data

    OS Net RINEX data is a standardised format for storing satellite navigation data collected by OS GNSS base stations in Great Britain.

Support and getting started

Our expert partners can help you