Looking on the Ridgeview website, it makes sense that sparkling wine favored by world leaders and monarchs should come from the correct side of Sussex.
I find the south east England wine thing interesting. I was at college, and a good friend for many years, of a nephew of the gent who started Denby. I think he was one of the first , and at the time most laughed at him. Fast forward 30 plus years and it’s a different story.