COMPOUNDCRS["ETRS89-GBR [OSNet v2009] + London Survey Grid height",GEOGCRS["ETRS89-GBR [OSNet v2009]",DATUM["OSNet v2009",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]],ANCHOREPOCH[2009.756]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]]],VERTCRS["London Survey Grid height",VDATUM["London Survey Grid height datum"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]]],USAGE[SCOPE["Reversible geoid model transformation."],AREA["United Kingdom (UK) - Greater London and surrounding area."],BBOX[51.1,-1.33,52,0.8]],ID["EPSG",10997]]