Diversification thumb|The first self-service Tesco shop in St Albans, Hertfordshire. The shop has since relocated. thumb|Tesco in Tomaszów Mazowiecki, Poland (now operating as Netto) The company started to expand the range of products it sold during the 1960s to include household goods and clothing under the Delamare brand, and in 1974 opened its first petrol station.
Diversification thumb|The first self-service Tesco shop in St Albans Hertfordshire The shop has since relocated thumb|Tesco in Tomaszów Mazowiecki Poland (now operating as Netto) The company started to expand the range of products it sold during the 1960s to include household goods and clothing under the Delamare brand and in 1974 opened its first petrol station