Sainsbury's said underlying profits this year will only reach about ?250 million. Tesco expects some ?2 billion. However, Sainsbury's will also see a write-off of around ?550 million, plunging the company into the red for the first time since the original shop was opened in Drury Lane in 1869. The statement also reveals that 131 supermarkets have received no investment for many years, despite accounting for 20 per cent of sales and being used by three million customers.