Royal Mail Shipping Method for WooCommerce

Channel Islands appear to be returning the incorrect postage rate as they seem to be classified as mainland UK within the plugin.

Mainland UK postcodes, Jersey postcodes and Guernsey postcodes all return the same rates (Parcelforce Worldwide Express) at the checkout, however, when retrieving a quote from Parcelforce’s website it is more expensive to ship to Jersey and Guernsey. It should be returning Parcelforce Globalvalue etc

Please see screenshots for examples.