COMPD_CS["OSGB36 / British National Grid + ODN",
    PROJCS["OSGB 1936 / British National Grid",
        GEOGCS["OSGB 1936",
            DATUM["OSGB 1936",
                SPHEROID["Airy 1830",6377563.396,299.3249646,
                    AUTHORITY["EPSG","7001"]],
                TOWGS84[446.448,-125.157,542.06,0.15,0.247,0.842,-4.2261596151967575],
                AUTHORITY["EPSG","6277"]],
            PRIMEM["Greenwich",0.0,
                AUTHORITY["EPSG","8901"]],
            UNIT["degree",0.017453292519943295],
            AXIS["Geodetic latitude",NORTH],
            AXIS["Geodetic longitude",EAST],
            AUTHORITY["EPSG","4277"]],
        PROJECTION["Transverse Mercator",
            AUTHORITY["EPSG","9807"]],
        PARAMETER["central_meridian",-2.0],
        PARAMETER["latitude_of_origin",49.0],
        PARAMETER["scale_factor",0.9996012717],
        PARAMETER["false_easting",400000.0],
        PARAMETER["false_northing",-100000.0],
        UNIT["m",1.0],
        AXIS["Easting",EAST],
        AXIS["Northing",NORTH],
        AUTHORITY["EPSG","27700"]],
    VERT_CS["Newlyn",
        VERT_DATUM["Ordnance Datum Newlyn",2005,
            AUTHORITY["EPSG","5101"]],
        UNIT["m",1.0],
        AXIS["Gravity-related height",UP],
        AUTHORITY["EPSG","5701"]],
    AUTHORITY["EPSG","7405"]]