New analysis of UK grocery prices for January shows that Aldi remains the benchmark for low‑cost shopping, reinforcing its long‑held position at the bottom of the price ladder and putting renewed pressure on full‑service supermarkets to justify their pricing strategies.
Consumer group Which? found that a representative basket of 68 groceries cost just £164.74 at Aldi in January, making it the most affordable among UK supermarkets. The findings reflect ongoing strength in the discounter model, even as market conditions flatten price differences in some categories.
Close behind, Lidl offered similar value. The same basket came to £166.33 for Lidl Plus members and £166.53 without the loyalty card — putting the German discounter within a few pounds of Aldi’s benchmark and highlighting the intense competition at the value end of the market.
By comparison, traditional supermarkets recorded significantly higher prices for the same set of items:
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Tesco: £182.92 with a Clubcard
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Asda: £183.04
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Morrisons: £187.65
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Sainsbury’s: £189.24 with Nectar card
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Ocado: £207.12
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Waitrose: £221.53
These figures show that even with loyalty incentives, large full‑service retailers are priced well above the discounters, adding to the narrative of increasing cost sensitivity among UK shoppers.
Broader Trolley Analysis Reflects Slight Shifts
Which? also examined a larger basket of 228 items, including a wider array of branded and own‑label products. In this extended comparison:
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Tesco (Clubcard) was the cheapest at £588.96
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Asda followed closely at £590.41
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Without a Clubcard, a Tesco shop rose to £641.09
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Waitrose was again the most expensive at £679.20
These results reflect nuances in supermarket strategies. Tesco’s loyalty programme helped it secure the lowest price on the larger trolley, setting it apart from rivals. However, the fact that loyalty card benefits exclude some demographic groups — such as under‑18s — suggests that not all shoppers may access those savings equally.
What This Means for UK Grocery Competition
Aldi’s leading position on the core basket measurement underscores the continuing appeal of the discount format, particularly for price‑focused households. Lidl’s proximity in cost reinforces the view that the two main discounters are engaged in an ongoing battle for budget shoppers.
By contrast, traditional multiples face the challenge of balancing broader product ranges, quality perceptions and service depth with competitive pricing. Loyalty schemes remain a key differentiator, but they also introduce complexity in how value is experienced by different customer segments.
For example, Tesco’s strong showing on the larger trolley suggests that its loyalty strategy can deliver value for frequent shoppers, but the reliance on membership benefits points to potential limits in its reach. Asda’s performance, marginally behind Tesco in this larger basket, highlights the intensity of competition among full‑service retailers and the strategic importance of price perception.
Charting the Competitive Landscape
Here is a snapshot comparison of the 68‑item basket across major UK supermarkets in January:
Supermarket Price (£)
Aldi — 164.74
Lidl (Plus) — 166.33
Lidl (Standard) — 166.53
Tesco (Clubcard) — 182.92
Asda — 183.04
Morrisons — 187.65
Sainsbury’s (Nectar) — 189.24
Ocado — 207.12
Waitrose — 221.53
This data illustrates the widening gulf between discounters and the traditional grocery leaders on everyday essentials, and suggests that price remains a defining battleground in UK food retail.
Shopper Behaviour and Retail Strategy
With ongoing cost‑of‑living pressures, many households are expected to continue migrating toward lower‑priced supermarkets or promoting greater use of own‑label lines. Discounters benefit from simplified assortments and lean cost structures, enabling them to sustain low pricing without undermining quality standards.
Full‑service supermarkets, meanwhile, face the dual challenge of protecting margin while responding to shifting shopping patterns. Loyalty programmes, product innovation and differentiation will continue to play strategic roles, but the January data reaffirms that price competitiveness cannot be overlooked in the race for market share.
For UK supermarkets, the message is clear: in an environment where shoppers are acutely price‑aware, cost leadership remains a powerful driver of choice — and the discounters continue to set the bar.