We offer Ordnance Survey contour lines at 5m intervals with every vector file. This includes all DWG files for Autocad and all DXF files.
This can be added to any purchase, for a small fee.
Digital Terrain Model (DTM) from Ordnance Survey gives spot heights in a grid every 5m. To order the DTM, select "map options" on the order summary page.
The price for DTM is £15 on any Vector file up to 20 hectares in area.
Download a sample DTM file