Tesco plc is a British multinational groceries and general merchandise retailer headquartered in Welwyn Garden City, England. In 2011, it was the third-largest retailer in the world measured by gross revenues and the ninth-largest in the world measured by revenues. It has shops in Ireland, the United Kingdom, the Czech Republic, Hungary, and Slovakia. It is the market leader of groceries in the UK.

Welwyn Garden City is a town in Hertfordshire, England, 20 miles (32 km) north of London. It was the second garden city in England and one of the first new towns. It is unique in being both a garden city and a new town and exemplifies the physical, social and cultural planning ideals of the periods in which it was built.