There are several supplementary layers included alongside the main Boundary-Line product. These supplementary layers sit separately to the main GB Boundary-Line folder and are included as separate directories in the shapefile and MapInfo TAB file formats.
Features included as supplementary in the supplementary directory are:
Historical counties
Ceremonial counties
Historical European regions (frozen as of 1 April 2021)
Country
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]
Name of the Ceremonial County, Historic County or Historic European Region.
Attribute Name: Name (GKPG), Name (TAB), NAME (Shapefile)
Data Type: char
Size: 100
Multiplicity: [1]
Classification set to Ceremonial County or Historic County or Historic European Region.
Attribute Name: Area_Description (GKPG), Area_Description (TAB), DESCRIPT0 (Shapefile)
Data Type: char
Size: 50
Multiplicity: [1]
Boundary polygon.
Attribute Name: Not provided (GKPG), Not provided (TAB), LINK_ID (Shapefile)
Data Type: GM_Surface