In collaboration with Badley Geoscience, the NSTA is making available Badley’s OCTek-UK products. OCTek-UK provides maps and grids of crustal structure for the UK and adjacent areas, produced by application of the OCTek gravity inversion technique. The data are provided in an a space-delimited ASCII format (.dat), an ArcGIS format (.asc), a Surfer grid format (.grd) and as a GeoTiff(.tif). These data are being released under the NSTA’s User Licence Agreement which enables use of the data by the end user but does not permit any commercial gain to be made from having access to these data unless prior permission has been provided by Badley Geoscience. Ownership of the data and full Intellectual Property Rights reside with Badley Geoscience.