I've imported UK wide coverage of ESC wind exposure data as a raster to ArcMap 10.2. The data is in WGS 1984 Pseudo Mercator which puts it way out against the UK OS standard grid. I can't get it to transform to OSGB1936 in ArcMap. In QGIS it seems to work fine and correlates with other UK vector data. Any suggestions?
You probably want the OSTN02 NTv2 grid file, which we just put into ArcGIS around version 10.4 or later. Download the file here:
In an Explorer window, browse to:
and create a new folder called uk.
Copy the OSTN02_NTv2.gsb file into the uk folder. After you restart/open a new ArcMap session, you should be able to use this transformations: OSGB_1936_To_WGS_1984_7.
(Transformation definition is already there, but the data was not being installed.)