LONDON — At the vast Sainsbury’s grocery store in south London’s Tooting Broadway neighborhood, a basket of milk, eggs, bread, cornflakes and butter will cost shoppers four pounds and 70 pence, or about $6.15. A short walk away at Aldi and Lidl — two German discount grocery stores — those same items amount to £3.92.

Those small differences in price are having a major impact on grocery shopping in Britain.

The vote last year to leave the European Union, known as Brexit, damaged confidence in the economy, and the pound has since fallen more than 10 percent against the dollar. That, in turn, has made imports more expensive, driving up the prices of staples like bananas and sugar. The Bank of England said on Thursday it expected inflation to accelerate. Wages, too, have started to drop, pushing many people to increasingly look for savings.

Opting for cheaper grocery stores like Aldi and Lidl is one such option, and the two retailers are taking advantage.