The beast of Bodmin and other folk lore
Camelford and all the rest of it. You'd think the very fierce winds that cut across Bodmin would check the vines at budding time. It's a hard place to be in January. The geological mineral type and PH of the soils will be good for light and fragrant wines though.
Seyval Blanc / Huxelrebe...... those would grow well here in Berkshire. Edward Hyams planted them in a bijou vineyard in Hambledon, I dunno, about four decades ago, when I first started growing fruit & vegetables and bought one of his books on traditional growing skills, he wrote about his work there.
http://www.hambledonvineyard.co.uk/index.asp?pageID=10
I notice from the website, that money is no object at Hambledon these days. The've got a guy in from madame Leroy Cote d'Or domaine to advise. They have grubbed-up in 2005, and replanted with noble varieties. At least ole Edward Hyams got the choice of terroir and the local climate just right.