<P> Tesco operates a number of in - shop cafes, but also began to introduce new restaurants in its shops from 2013 under the "Decks Carvery" brand . </P> <P> Tesco Express shops are neighbourhood convenience shops averaging 200 square metres (2,200 sq ft), stocking mainly food with an emphasis on higher - margin products such as sweets, crisps, chocolate, biscuits, fizzy drinks and processed food (due to small shop size, and the necessity to maximize revenue per square foot) alongside everyday essentials . They are found in busy city centre districts, small shopping precincts in residential areas, small towns and villages and on Esso petrol station forecourts . In 2010, it emerged that Tesco was operating Express pricing; i.e., charging more in their Express branches than in their regular branches . A spokesperson said that this was "because of the difference in costs of running the smaller shops". </P> <P> Tesco Metro shops are sized between Tesco superstores and Tesco Express shops, with shops averaging 1,000 square metres (11,000 sq ft). They are mainly located in city centres beside railway stations, the inner city and on the high streets of towns . </P> <P> One Stop, which includes some of the smallest shops (smaller than a Tesco Express), is the only Tesco shop format in the UK that does not include the word Tesco in its name . The brand, along with the original shops, formed part of the T&S Stores business but, unlike many that were converted to Tesco Express, these kept their old name . Subsequently, other shops bought by Tesco have been converted to the One Stop brand . Some have Tesco Personal Finance branded cash machines . The business has attracted some controversy, as the prices of groceries in these shops, often situated in more impoverished areas, can be higher than nearby Tesco branded shops, highlighted in The Times 22 March 2010: "Britain's biggest supermarket uses its chain of 639 One Stop convenience shops--which many customers do not realise it owns--to charge up to 14 per cent more for goods than it does in Tesco - branded shops ." </P>

Tesco is the world's third largest retailer