GEOGCS["GCS_ETRS89-GBR_OSNet_v2009",DATUM["D_ETRS_1989",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],VERTCS["London_Survey_Grid_height",VDATUM["London_Survey_Grid_height_datum"],PARAMETER["Vertical_Shift",0.0],PARAMETER["Direction",1.0],UNIT["Meter",1.0]]