EPSG:9456 — GBK19 Grid

Projected · UK - Glasgow to Kilmarnock

Export Formats

OGC WKT

PROJCS[
    "GBK19 Grid",
    GEOGCS[
        "GBK19-IRF",
        DATUM[
            "GBK19_Intermediate_Reference_Frame",
            SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],
            AUTHORITY["EPSG","1289"]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","9453"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",55.75],
    PARAMETER["central_meridian",-4.35],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",93720.394],
    PARAMETER["false_northing",113870.493],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","9456"]
]

WKT2

PROJCRS[
    "GBK19 Grid",
    BASEGEOGCRS[
        "GBK19-IRF",
        DATUM[
            "GBK19 Intermediate Reference Frame",
            ELLIPSOID[
                "GRS 1980",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7019]
            ],
            ID["EPSG",1289]
        ],
        DEFININGTRANSFORMATION[
            "ETRS89-GBR [OSNet v2009] to GBK19-IRF (1)",
            ID["EPSG",9454]
        ],
        ID["EPSG",9453]
    ],
    CONVERSION[
        "GBK19-TM",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            55.7500000000003,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            -4.35000000000028,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            93720.394,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            113870.493,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",9455]
    ],
    CS[Cartesian,2,ID["EPSG",4400]],
    AXIS["Easting (E)",east],
    AXIS["Northing (N)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",9456]
]

PROJ.4

+proj=tmerc +lat_0=55.75 +lon_0=-4.35 +k=1 +x_0=93720.394 +y_0=113870.493 +ellps=GRS80 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:9456", "+proj=tmerc +lat_0=55.75 +lon_0=-4.35 +k=1 +x_0=93720.394 +y_0=113870.493 +ellps=GRS80 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 9456,
  "name": "GBK19 Grid",
  "kind": "projected",
  "area": "UK - Glasgow to Kilmarnock",
  "unit": "metre",
  "bbox": [
    55.55,
    -4.65,
    55.95,
    -4.05
  ],
  "proj4": "+proj=tmerc +lat_0=55.75 +lon_0=-4.35 +k=1 +x_0=93720.394 +y_0=113870.493 +ellps=GRS80 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (9456, 'EPSG', 9456, '+proj=tmerc +lat_0=55.75 +lon_0=-4.35 +k=1 +x_0=93720.394 +y_0=113870.493 +ellps=GRS80 +units=m +no_defs +type=crs', 'PROJCS["GBK19 Grid",GEOGCS["GBK19-IRF",DATUM["GBK19_Intermediate_Reference_Frame",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1289"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","9453"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",55.75],PARAMETER["central_meridian",-4.35],PARAMETER["scale_factor",1],PARAMETER["false_easting",93720.394],PARAMETER["false_northing",113870.493],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","9456"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=55.75"
  "+lon_0=-4.35"
  "+k=1"
  "+x_0=93720.394"
  "+y_0=113870.493"
  "+ellps=GRS80"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

9456=PROJCS["GBK19 Grid",GEOGCS["GBK19-IRF",DATUM["GBK19_Intermediate_Reference_Frame",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1289"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","9453"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",55.75],PARAMETER["central_meridian",-4.35],PARAMETER["scale_factor",1],PARAMETER["false_easting",93720.394],PARAMETER["false_northing",113870.493],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","9456"]]

Related Coordinate Systems

Available Transformations (1)

Transformations inherited from base CRS: EPSG:9453 (GBK19-IRF)

Transformation	Source → Target	Accuracy (m)
ETRS89-GBR [OSNet v2009] to GBK19-IRF (1)	11009 → 9453	0

Other CRS using GBK19 Intermediate Reference Frame

Frequently Asked Questions

How do I add EPSG:9456 to GeoServer?

Add the following definition to your GeoServer configuration:

9456=PROJCS["GBK19 Grid",GEOGCS["GBK19-IRF",DATUM["GBK19_Intermediate_Reference_Frame",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1289"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","9453"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",55.75],PARAMETER["central_meridian",-4.35],PARAMETER["scale_factor",1],PARAMETER["false_easting",93720.394],PARAMETER["false_northing",113870.493],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","9456"]]

Read the full GeoServer guide →

How do I add EPSG:9456 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (9456, 'EPSG', 9456, '+proj=tmerc +lat_0=55.75 +lon_0=-4.35 +k=1 +x_0=93720.394 +y_0=113870.493 +ellps=GRS80 +units=m +no_defs +type=crs', 'PROJCS["GBK19 Grid",GEOGCS["GBK19-IRF",DATUM["GBK19_Intermediate_Reference_Frame",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1289"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","9453"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",55.75],PARAMETER["central_meridian",-4.35],PARAMETER["scale_factor",1],PARAMETER["false_easting",93720.394],PARAMETER["false_northing",113870.493],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","9456"]]');

Read the full PostGIS guide →

How do I add EPSG:9456 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+lat_0=55.75"
  "+lon_0=-4.35"
  "+k=1"
  "+x_0=93720.394"
  "+y_0=113870.493"
  "+ellps=GRS80"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:9456 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:9456", "+proj=tmerc +lat_0=55.75 +lon_0=-4.35 +k=1 +x_0=93720.394 +y_0=113870.493 +ellps=GRS80 +units=m +no_defs +type=crs");

Read the full Proj4js guide →

Type

Projected

Unit

metre

Geodetic CRS

GBK19-IRF

Datum

GBK19 Intermediate Reference Frame

Ellipsoid

GRS 1980

Prime Meridian

Greenwich

Area of Use

UK - Glasgow to Kilmarnock

United Kingdom (UK) - on or related to the rail route from Glasgow to Kilmarnock via Barrhead and th…

Coordinate System

Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.

Center Coordinates

93720.39 113870.49

Projected Bounds

136178.97 74785.69112462.35 91644.28

WGS84 Bounds

55.95 -4.65-4.05 55.55

Data Source

EPSG

Information Source

Network Rail.

Revision Date

2026-02-10

Scope

Engineering survey and topographic mapping for railway applications.

Remarks

The CRS's definition through transformation ETRS89-GBR [OSNet v2009] to GBK19-IRF (1) (code 9454) and map projection GBK19-TM (code 9455) emulates the GBK19 Snake projection applied to ETRS89 as realized through OSNet v2009.

EPSG

9456