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OS Terrain 5 support

OS Terrain 5 is regularly updated in line with other large-scale datasets. It explicitly and accurately models significant features such as roads, railways, quarries and lakes.

Getting started

OS Terrain is the name given to Ordnance Survey’s range of height products. These are three-dimensional models of the bare earth surface known as digital terrain models (DTMs).

User guide (PDF)

OS Terrain 5 is published as both grid and contours, each in a variety of formats. Both data types are created from the same source data and are supplied as 5 km by 5 km tiles.