A man carries a plastic shopping bag as he walks past an Aldi supermarket store in London on September 26, 2016. Aldi UK announced on Monday that it will invest £300 million ($389 million, 346 million euros) to revamp its stores over the next three years. Aldi and its German rival Lidl have boomed in Britain, grabbing market share from traditional supermarkets Asda, Morrison, Sainsbury's and Tesco, as customers tightened their belts to save cash. / AFP / Daniel Leal-Olivas (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)