Research from Which? has confirmed Aldi remains the UK’s most affordable supermarket as the discounter continues its winning streak after August’s victory.
This marks Aldi’s eighth win this year and its 23rd in the last two years.
Aldi’s basket totalled at £122.77, making it £17.47 cheaper than Morrisons, £19.93 less expensive than Sainsbury’s, and £15.89 cheaper than Tesco.
The research also highlighted that Aldi’s loyalty card prices offer the biggest savings. The retailer Sainsbury’s Nectar Card prices by £15.97 and Tesco Clubcard prices by £12.87. In fact, Which?’s research indicates loyalty card shoppers could have saved up to £830.44 in the last year by switching to Aldi.
Additional analysis also shows further long-term savings, with Aldi customers able to have saved up to almost £2,201 over the past year compared to the most expensive supermarket Waitrose.
“The latest Which? report proves that Aldi is committed to keeping groceries high-quality and low-cost – because that’s what people really need. We’re proud to retain our title, helping shoppers save for life’s other essentials,” commented Julie Ashfield, chief commercial officer for Aldi UK.
Slashing prices
Aldi has invested more than £300 million in price cuts since the start of 2025. It has slashed over 900 prices in recent months across a range of products, including fresh fruit and vegetables, bread, dairy and other household staples.
Meanwhile, Lidl – which was ranked in second place by Which? – has announced a £250m investment in cutting prices of everyday items.
Since the start of the year, Lidl has reduced prices on over 1,000 products lines. The investment complements its loyalty rewards scheme which gives personalised and milestone offers, including a free in-store bakery sweet treat after spending £10 in a month and a 10% off a customer’s next shop when they reach £250. Additionally, the discounter’s ‘Pick of the Week’ gives customers weekly in-store offers on fruit, veg, meat and poultry.
This announcement follows a rise in entry-level hourly pay in September from Lidl.
“We’re committed to providing our customers with the best value every single day, and our teams work tirelessly throughout the year to deliver this for them,” said Richard Bourns, chief commercial officer at Lidl GB.
“We also firmly believe that everyone should have access to healthy affordable food, which is why we ensure that we’re offering the lowest prices in the market and it’s why we’re on a mission to bring new Lidl stores to more communities across the country."
Which? September 2025 price results:
| Retailer | Average price for 71 items |
|---|---|
| Aldi | £122.77 |
| Lidl | £123.95 |
| Tesco (inc loyalty discount) | £135.64 |
| Asda | £136.98 |
| Tesco | £138.66 |
| Sainsbury’s (inc loyalty discount) | £138.74 |
| Morrisons (inc loyalty discount) | £140.19 |
| Morrisons | £140.24 |
| Sainsbury’s | £142.70 |
| Ocado | £154.08 |
| Waitrose | £167.19 |
References
- 12 months of Aldi prices: £1,697.57, 12 months of Waitrose prices: £2,247.78, difference = £550.21x4= £2,200.84
