OS Terrain 50
A free to use topology GIS dataset, to help you visualise simple landscapes in 3D and bring your geographic analysis to life.
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 MasterMap Imagery Layer
When you need the visual feel for a location, the aerial photography of OS MasterMap® Imagery Layer gives you the real-world view.