Well Known Text
 
WKT Version 2
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,ID["EPSG",9001]],ID["EPSG",7019]],ANCHOREPOCH[2009.756],ID["EPSG",1425]],CS[ellipsoidal,2,ID["EPSG",6422]],AXIS["Geodetic latitude (Lat)",north],AXIS["Geodetic longitude (Lon)",east],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",11009]],VERTCRS["London Survey Grid height",VDATUM["London Survey Grid height datum",ID["EPSG",1423]],CS[vertical,1,ID["EPSG",6499]],AXIS["Gravity-related height (H)",up],LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",10989]],ID["EPSG",10997]]


