Britain’s supermarket wine aisles are paved with Gold, Silver and Bronze according to the latest results of the International Wine Challenge, announced today. A flurry of medals was awarded to own-brand and exclusive wines at Tranche One of the world-renowned wine competition, highlighting how lucky UK shoppers can get their hands on world-class wines from their local stores. A total of 222 Gold, Silver and Bronze medals were awarded to supermarket own-brand and exclusive wines, with Marks & Spencer trouncing…