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OS Terrain 5

OS Terrain® 5 is our detailed digital terrain model (DTM) of Great Britain. It is available as a grid of heighted points and contours, both at five-metre intervals.


OS Terrain 5 is ideal for 3D visualisations. It models significant landscape features including roads, railways, slopes, quarries and lakes, and offers a typical accuracy level greater than 2m RMSE.

You can quickly understand the impact of flash floods on roads, homes and other major infrastructure. You're able to assess the lie of the land on-screen, reducing the need for time-consuming site visits.

OS Terrain 5 adds the third dimension to OS MasterMap Topography Layer. You won't find another height product with this level of consistency, currency and detail.

A true virtual landscape

A true virtual landscape

OS Terrain 5 is the height data you need to model construction projects within the wider landscape. This helps you give planners an accurate virtual view of your plans and the steps you’re taking to minimise their visual impact on the surrounding area.

Harness the elements

Harness the elements

OS Terrain 5 helps you analyse wind speed and signal propagation. This is important when siting wind turbines, best located in exposed upland areas to maximise their power output, and mobile phone masts, which serve ever more data-hungry users.



With both 5m grid and 5m contours in GML, Esri shape and ASCII grid available for one price, OS Terrain 5 puts the detailed analysis of Great Britain’s landscape within reach.

Explore our data

You’re welcome to try out this data for free under our Data Exploration Licence.

Internal business use

When using OS data in your own business, you need our Framework Contract (Direct Customers) together with a data contract.

Creating products or services

To use this data commercially in your own products and services, or to distribute it, you will need to sign up to our Framework Contract (Partners) and a relevant defined use contract. This will vary depending on what you’re going to do with the data.

How to get this product

Sample data

Give it a try

Download a small area of OS Terrain 5 sample data.

Or you can apply for a Data Exploration Licence to try out the real thing.

Technical specification

Key FeaturesWhat this product offers
FormatGML 3.2 and ASCII grid for DTM, GML 3.2 and Esri shapefile for contours
ResolutionGrid: 5m post spacing. Contours: vertical interval of 5m
Tile size5km x 5km
Scale1:10 000
SupplyDownload (annual contract)
Update frequencyQuarterly – January, April, July and October
CoverageGreat Britain