MANCHESTER, England, 2017-Apr-27 — /EPR Retail News/ — The Callington based Great British Crisp Company, that works with Warrens Bakery to develop unique flavours, has “bagged” a contract to supply 40 Co-op food stores across Cornwall. Using Cornish Sea Salt™ and potatoes, The Great British Crisp Company estimates that it could sell up to 30,000 packs…