COMPOUNDCRS["MRH21 Grid + ODN height",PROJCRS["MRH21 Grid",BASEGEOGCRS["MRH21-IRF",DATUM["MRH21 Intermediate Reference Frame",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",9866]],CONVERSION["MRH21-TM",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",52.3,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-1.8,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",227286.9881,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",265751.2874,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["ODN height",VDATUM["Ordnance Datum Newlyn"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]]],USAGE[SCOPE["Engineering survey and topographic mapping for railway applications."],AREA["United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln."],BBOX[51.35,-3.27,53.26,-0.36]],ID["EPSG",9870]]