Tesco is having a new promotions of a brand called F&F which only available by Tesco only! Check out this range of clothing and jeans!!! Tesco is a global grocery and general merchandising retailer headquartered in Cheshunt, United Kingdom. It is the third-largest retailer in the world measured by revenues (after Wal-Mart and Carrefour) and the second-largest measured by profits (after Wal-Mart).