Area features are polygons with attributes added.
The following schema applies to all area features in the GB folder of the shapefile, MapInfo TAB and GeoPackage data supply, and for all area features in the Supplementary_Country folder of the shapefile, MapInfo TAB and GeoPackage data supply.
The following sub-sections provide details about the attributes included with this feature type, their data types in the different output formats, and other important metadata about them.
Feature identifier added by the software.
Attribute Name: fid (GKPG), Not provided (TAB), Not provided (Shapefile)
Multiplicity: [1]
Feature geometry.
Attribute Name: Not provided (GKPG), Not provided (TAB), SHAPE (Shapefile)
Data Type: Polygon
Multiplicity: [1]
Name of the administrative area.
Attribute Name: Name (GKPG), Name (TAB), NAME (Shapefile)
Data Type: char
Size: 100
Multiplicity: [0..1]
A code describing the level.
Attribute Name: Area_Code (GKPG), Area_Code (TAB), AREA_CODE (Shapefile)
Code List Name: AreaCode
Size: 3
Multiplicity: [1]
Full name of the Area_Code.
Attribute Name: Area_Description (GKPG), Area_Description (TAB), DESCRIPTIO (Shapefile)
Data Type: char
Size: 50
Multiplicity: [1]
Name of the Principal Area which the boundary sits within.
This may be the same boundary level as the boundary itself, for example, a Greater London Authority boundary will have ‘Greater London Authority’ present in this field. But for more granular boundaries, this field will show the principal boundary which is at the principal level.
Attribute Name: File_Name (GKPG), File_Name (TAB), FILE_NAME (Shapefile)
Data Type: char
Size: 100
Multiplicity: [1]
Serial Number applied to the Boundary Feature during the production of the product.
This is not the unique key for this product and is not maintained.
Attribute Name: Feature_Serial_Number (GKPG), Feature_Serial_Number (TAB), NUMBER (Shapefile)
Data Type: Integer (TAB), Double (Shapefile)
Size: 11 (TAB), n/a (Shapefile)
Multiplicity: [1]
Collection Serial Number applied to the Boundary Feature during the production of the product.
This is not the unique key for this product and is not maintained.
Attribute Name: Collection_Serial_Number (GKPG), Collection_Serial_Number (TAB), NUMBER0 (Shapefile)
Data Type: Integer (TAB), Double (Shapefile)
Size: 11 (TAB), n/a (Shapefile)
Multiplicity: [1]
A globally unique sequential integer-maintained identifier.
Attribute Name: Global_Polygon_ID (GKPG), Global_Polygon_ID (TAB), POLYGON_ID (Shapefile)
Data Type: Integer (TAB), Double (Shapefile)
Size: 11 (TAB), n/a (Shapefile)
Multiplicity: [1]
A globally unique sequential integer-maintained feature identifier. There are two cases where multiple records have the same UNIT_ID:
When portions of local government or parliamentary constituency areas are separated from the main area, being completely surrounded by other local government or parliamentary constituency areas and not connected by direct access on the ground. Not applied to islands or parts of islands in the sea. Detached parts have the same attributes as the main area, except the POLYGON_ID and the Name which has a ‘(DET)’ suffix. In all the existing examples, there is exactly one detached part.
In Scotland, two examples where the boundary has thousands of parts, so the multi-polygon is broken into simple polygons to make it easier to handle. The examples are the supplementary country_region layer where NAME=‘SCOTLAND_COUNTRY’ and scotland_and_wales_region where NAME='Highlands and Islands PER'.
Attribute Name: Admin_Unit_ID (GKPG), Admin_Unit_ID (TAB), UNIT_ID (Shapefile)
Data Type: Integer (TAB), Double (Shapefile)
Size: 11 (TAB), n/a (Shapefile)
Multiplicity: [1]
Set to the Census / GSS Code for the boundary, for example, E10000014.
Attribute Name: Global_Polygon_ID (GKPG), Global_Polygon_ID (TAB), CODE (Shapefile)
Data Type: Char
Size: 9
Multiplicity: [0..1]
Set to the Census / GSS Code for the boundary, for example, E10000014.
Attribute Name: Hectares (GKPG), Hectares (TAB), HECTARES (Shapefile)
Data Type: Char
Size: 9
Multiplicity: [1]
Amount of area within the boundary which is not considered ‘inland’. Non-inland areas are calculated by comparing the Boundary-Line polygons with the Mean High Water lines. The value is in hectares and represents the area between the Mean High Water line and the seaward limit of the boundary denoting Mean Low Water.
Attribute Name: Non_Inland_Area (GKPG), Non_Inland_Area (TAB), AREA (Shapefile)
Data Type: Decimal (TAB), Double (Shapefile)
Size: 12 (TAB), n/a (Shapefile)
Multiplicity: [1]
Code depicting whether the boundary is part of a Civil Administration Area, a Civil Voting Area.
Attribute Name: Area_Type_Code (GKPG), Area_Type_Code (TAB), TYPE_CODE (Shapefile)
Code List Name: TypeCode
Size: 2
Multiplicity: [1]
Full description of TYPE_CODE.
Attribute Name: Area_Type_Description (GKPG), Area_Type_Description (TAB), DESCRIPT0 (Shapefile)
Data Type: Char
Size: 25
Multiplicity: [0..1]
Shouldn’t be populated.
Attribute Name: Non_Area_Type_Code (GKPG), Non_Area_Type_Code (TAB), TYPE_COD0 (Shapefile)
Data Type: Char
Size: 3
Multiplicity: [0..1]
Shouldn’t be populated.
Attribute Name: Non_Area_Type_Description (GKPG), Non_Area_Type_Description (TAB), DESCRIPT1 (Shapefile)
Data Type: Char
Size: 36
Multiplicity: [0..1]