Tesco (TSCO) is a top-tier British grocery retailer with their head office based in Welwyn Garden City. The company was established in 1919 by Jack Cohen. The TESCO name has a story behind it. The founder, Jack Cohen purchased a big shipment of tea. He bought it from T.E. Stockwell. To give this tea a proper name, Jack added the initial letters of his own surname. That’s how TESCO was born and the world-known brand name was coined.