So that confirms most of their vines are in West Sussex then and that is before you consider the massive expansion they are currently undertaking North of West Chilts (have bought & closed down the local Golf Club to plant it with vines).
Anyway before we agree to disagree I'll just say I don't...
A small amount may be grown just over the border in Pantshire but the vast majority comes from Gods Own County. And obviously all of it is made in West Chilts as well... :p