Overview

• Lidl ended Aldi’s 20-month streak by registering the lowest average cost for a 76-item basket at £128.40 in July.
• Lidl Plus members benefited from an additional 40p discount per basket, underlining the impact of retailer loyalty schemes on affordability.
• Asda maintained its lead for larger shopping trips with a 192-item trolley averaging £474.12, beating Tesco Clubcard prices by £7.47.
• Waitrose remained the priciest option across both basket sizes, charging £170.91 for the smaller shop and £538.33 for the larger trolley.
• Which?’s monthly survey covers eight major UK supermarkets, includes special offer and loyalty prices but excludes multibuys to measure genuine household spending.