A barista makes a latte at the Harris and Hoole coffee shop inside a Tesco Extra supermarket in Watford, north of London August 8, 2013. Tesco, the world's number three retailer, is hoping the allure of casual dining, coffees and even yoga will help tempt Britons back to its ailing retail park stores as part of a 1 billion pound ($1.55 billion) push to revitalise business.