Tesco was founded in 1919 by Jack Cohen, who began selling surplus groceries from a market stall in London's East End. The Tesco brand itself appeared in 1924, derived from the initials of tea supplier T.E. Stockwell combined with the first two letters of Cohen's surname. From those origins, the business grew into the largest supermarket chain in the United Kingdom and one of the largest retailers globally by revenue.
Several inflection points shaped the modern organisation. The launch of the Clubcard loyalty scheme in 1995 was a defining moment, not just for Tesco but for British retail broadly; the data gathered gave the company a structural advantage in understanding customer behaviour that competitors spent years attempting to replicate. International expansion followed through the late 1990s and 2000s, though a costly exit from the United States market in 2013, where its Fresh & Easy format failed, marked a significant strategic retreat and a period of renewed focus on core markets.
Today Tesco operates across grocery retail, financial services via Tesco Bank, and a substantial digital and fulfilment operation. Its e-commerce and same-day delivery capabilities place it among the more technically mature incumbents in British grocery. The Clubcard platform has evolved into a pricing mechanism as much as a loyalty tool, with Clubcard Prices now central to its value proposition against discounters such as Aldi and Lidl.
For operators and scale-up leaders, Tesco is worth watching as a case study in how a legacy physical retailer has adapted its data infrastructure to compete in an omnichannel environment. Its decisions around fulfilment models, supplier relationships, and loyalty monetisation continue to set reference points for the wider retail sector.
