Tesco is the largest British retailer and is also the world's third largest grocery retailer with outlets across Europe, USA and Asia. The business began in 1919 with one man, Jack Cohen, selling groceries from a stall in the East End of London. Jack bought surplus stocks of tea from a company called T.E. Stockwell. T.E. Stockwell and Cohen combined their names to brand the tea Cohen originally sold TESCO tea. In 1929, the first Tesco store opened in north London.