According to reports, sales of English sparkling wine are set to hit 5 million bottles by 2015.There are almost 400 vineyards in the UK now, almost twice that of 10 years ago. “We have a unique terroir that makes English sparkling wine special. It’s more expensive to produce than Champagne, the cost of land is higher and yields are lower.” said Ridgeview winemaker Charlie Holland. “It’s a fallacy to say you can’t ripen grapes in…