Under pressure from environmental campaigners, British supermarkets are experimenting with ways to cut their plastic footprint. Under pressure from environmental campaigners, British supermarkets are experimenting with ways to cut their plastic footprint. At a Waitrose grocery store in Oxford, England, shoppers are scooping up frozen fruit from dispensers like pick and mix candy. They are filling old plastic takeaway containers with everything from muesli to risotto rice. Welcome to Unpacked, the new store concept from Waitrose, which has freed more than 200 items from their packaging. Environmental campaigners like Greenpeace have been demanding British supermarkets reduce their plastic footprint. But it’s trickier to strip wrappings from food than other products, such as toys, because it can go off. The packaging conundrum facing grocers only compounds another problem they’re grappling with: food waste. But they are making strides to be green, from eliminating hard-to-recycle materials, such as PVC, to enabling customers to remove and recycle wrappings before products leave the store. Some are even offering reverse vending machines to recycle plastic bottles. Tesco Plc said re...