COMPOUNDCRS["London Survey Grid 2025",PROJCRS["Xrail84 / London Survey Grid TM",BASEGEOGCRS["Xrail84",DATUM["Xrail84",ELLIPSOID["WGS 84",6378137,298.257223563,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",10993]],CONVERSION["London Survey Grid TM",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",51.1666666666667,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-0.158333333333333,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9999999,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",78250,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",-2800,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["(E)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["(N)",north,ORDER[2],LENGTHUNIT["metre",1]]],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["Engineering survey and topographic mapping for transport applications."],AREA["United Kingdom (UK) - Greater London and surrounding area."],BBOX[51.1,-1.33,52,0.8]],ID["EPSG",11006]]