COMPD_CS["Dart+26 Grid + Malin Head height",
    PROJCS["Dart+26 Grid",
        GEOGCS["Dart+26-IRF",
            DATUM["Dart+26_Intermediate_Reference_Frame",
                SPHEROID["GRS 1980",6378137,298.257222101,
                    AUTHORITY["EPSG","7019"]],
                AUTHORITY["EPSG","1460"]],
            PRIMEM["Greenwich",0,
                AUTHORITY["EPSG","8901"]],
            UNIT["degree",0.0174532925199433,
                AUTHORITY["EPSG","9122"]],
            AUTHORITY["EPSG","11461"]],
        PROJECTION["Transverse_Mercator"],
        PARAMETER["latitude_of_origin",53.45],
        PARAMETER["central_meridian",-6.35],
        PARAMETER["scale_factor",1],
        PARAMETER["false_easting",243865.8029],
        PARAMETER["false_northing",222073.5699],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Easting",EAST],
        AXIS["Northing",NORTH],
        AUTHORITY["EPSG","11464"]],
    VERT_CS["Malin Head height",
        VERT_DATUM["Malin Head",2005,
            AUTHORITY["EPSG","5130"]],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Gravity-related height",UP],
        AUTHORITY["EPSG","5731"]],
    AUTHORITY["EPSG","11465"]]