Overview
- Which? named Aldi the UK’s cheapest supermarket for August 2025 at £127.92 for a 75-item basket, restoring its lead.
- Lidl finished a close second at about £128.30 with loyalty and £128.35 without, highlighting a margin measured in pence.
- Lidl had topped the July ranking at £128.40, briefly ending Aldi’s long streak that stretched back to November 2023.
- Aldi celebrated with a tongue-in-cheek ‘apology’ to Lidl on social media, joking about a caterpillar cake and its Middle Aisle.
- Reader reactions were broadly positive to the banter, and Which?’s broader check found Asda cheapest among traditional grocers at £139.42 and Waitrose priciest at £172.61.