Map of the Historic Counties of the United Kingdom
About this map
The borders shown on this map are provided by The Historic Counties Trust and form part of the Historic Counties Border Project. The digitised data and the Historic Counties Standard is available on here on this site and on their website.
For a more advanced solution, you can integrate the border data as a KML layer using the Google Maps API. Simply add the following line to your code implementation:
var ctaLayer = new google.maps.KmlLayer('http://www.county-borders.co.uk/Historic_Counties.kmz'); ctaLayer.setMap(map);
More information about the Google Maps API can be found on the Google Developers website.
Please note that if you embeded you map via the 'classic Google Maps' you will now need to choose one of the above methods as Google have withdrawn support for this method.