EPSG:7405 — OSGB36 / British National Grid + ODN height

COMPOUNDCRS[
    "OSGB36 / British National Grid + ODN height",
    PROJCRS[
        "OSGB36 / British National Grid",
        BASEGEOGCRS[
            "OSGB36",
            DATUM[
                "Ordnance Survey of Great Britain 1936",
                ELLIPSOID[
                    "Airy 1830",
                    6377563.396,
                    299.3249646,
                    LENGTHUNIT["metre",1,ID["EPSG",9001]],
                    ID["EPSG",7001]
                ],
                ID["EPSG",6277]
            ],
            ID["EPSG",4277]
        ],
        CONVERSION[
            "British National Grid",
            METHOD["Transverse Mercator",ID["EPSG",9807]],
            PARAMETER[
                "Latitude of natural origin",
                49,
                ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
                ID["EPSG",8801]
            ],
            PARAMETER[
                "Longitude of natural origin",
                -2,
                ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
                ID["EPSG",8802]
            ],
            PARAMETER[
                "Scale factor at natural origin",
                0.9996012717,
                SCALEUNIT["unity",1,ID["EPSG",9201]],
                ID["EPSG",8805]
            ],
            PARAMETER[
                "False easting",
                400000,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",8806]
            ],
            PARAMETER[
                "False northing",
                -100000,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",8807]
            ],
            ID["EPSG",19916]
        ],
        CS[Cartesian,2,ID["EPSG",4400]],
        AXIS["Easting (E)",east],
        AXIS["Northing (N)",north],
        LENGTHUNIT["metre",1,ID["EPSG",9001]],
        ID["EPSG",27700]
    ],
    VERTCRS[
        "ODN height",
        VDATUM["Ordnance Datum Newlyn",ID["EPSG",5101]],
        CS[vertical,1,ID["EPSG",6499]],
        AXIS["Gravity-related height (H)",up],
        LENGTHUNIT["metre",1,ID["EPSG",9001]],
        GEOIDMODEL["ETRS89-GBR [OSNet v2009] to ODN height (2)",ID["EPSG",7711]],
        GEOIDMODEL["ETRS89 to ODN height (1)",ID["EPSG",10021]],
        ID["EPSG",5701]
    ],
    ID["EPSG",7405]
]

+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +units=m +vunits=m +no_defs +type=crs

proj4.defs("EPSG:7405", "+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +units=m +vunits=m +no_defs +type=crs");

{
  "type": "CoordinateReferenceSystem",
  "code": 7405,
  "name": "OSGB36 / British National Grid + ODN height",
  "kind": "compound",
  "area": "UK - Great Britain mainland onshore",
  "unit": null,
  "bbox": [
    49.93,
    -7.06,
    58.71,
    1.8
  ],
  "proj4": "+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +units=m +vunits=m +no_defs +type=crs"
}

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (7405, 'EPSG', 7405, '+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +units=m +vunits=m +no_defs +type=crs', 'COMPD_CS["OSGB36 / British National Grid + ODN height",PROJCS["OSGB36 / British National Grid",GEOGCS["OSGB36",DATUM["Ordnance_Survey_of_Great_Britain_1936",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6277"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4277"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49],PARAMETER["central_meridian",-2],PARAMETER["scale_factor",0.9996012717],PARAMETER["false_easting",400000],PARAMETER["false_northing",-100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","27700"]],VERT_CS["ODN height",VERT_DATUM["Ordnance Datum Newlyn",2005,AUTHORITY["EPSG","5101"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5701"]],AUTHORITY["EPSG","7405"]]');

PROJECTION
  "+proj=tmerc"
  "+lat_0=49"
  "+lon_0=-2"
  "+k=0.9996012717"
  "+x_0=400000"
  "+y_0=-100000"
  "+ellps=airy"
  "+units=m"
  "+vunits=m"
  "+no_defs"
  "+type=crs"
END

7405=COMPD_CS["OSGB36 / British National Grid + ODN height",PROJCS["OSGB36 / British National Grid",GEOGCS["OSGB36",DATUM["Ordnance_Survey_of_Great_Britain_1936",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6277"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4277"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49],PARAMETER["central_meridian",-2],PARAMETER["scale_factor",0.9996012717],PARAMETER["false_easting",400000],PARAMETER["false_northing",-100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","27700"]],VERT_CS["ODN height",VERT_DATUM["Ordnance Datum Newlyn",2005,AUTHORITY["EPSG","5101"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5701"]],AUTHORITY["EPSG","7405"]]