I've been working on UK polygons to use Ceremonial Counties as per https://en.wikipedia.org/wiki/Ceremonial_counties_of_England for Project-GC's county map.
I'm fairly sure I've got the mappings from ceremonial counties to Geocaching Regions correct however I'd appreciate feedback from English users to confirm I've correctly allocated them.
The key ones I'm not 100% on is the boundaries (east and west) of Southern England.
*Bedfordshire (Southern England?)
*Hertfordshire (Southern England?)
City of London
Tyne and Wear
Isle of Wight
South West England
City of Bristol
*Dorset (Southern England?)
*Gloucestershire (Southern England?)
*Wiltshire (Southern England?)
East Riding of Yorkshire
I'm fairly sure the rest is right but please let me know if I've got anything wrong. Note these are the CURRENT ceremonial counties as defined by the Lieutenancies Act 1997.