Historic Counties Trust UK Definition B County Border Vector data
Projection: OSGB
Resolution: Simplified
Release date: 2026-03-31 

This data set is based on the Historic Counties Standard (https://historiccountiestrust.co.uk/Historic_Counties_Standard.pdf)

The data are provided free of charge for all personal, educational,
non-commercial and commercial use. No specific permission is required. However,
the Historic Counties Trust would appreciate an appropriate acknowledgement of
the use of the data, along the lines of:

"This [project/mapping/website/publication etc.] made use of data provided by
the Historic County Borders Project." For web publications, this statement
should contain a link to the Project web site, https://www.county-borders.co.uk.
