Grocery price inflation in the United Kingdom has accelerated slightly, prompting consumers to increasingly rely on special offers to manage rising food costs. In the four weeks leading up to October 4, supermarket prices were 2.5% higher compared to the same period last year, up from a 2.3% annual increase reported the previous month, according to data from retail analyst Worldpanel by Numerator.

The increase in prices has coincided with a surge in spending on promotions, which rose by more than £250 million year on year. Many shoppers are using discounts and deals to make pricier items or larger packages more affordable, as financial pressures mount amid concerns over the overall cost of living. Fraser McKevitt, head of retail and consumer insight at Worldpanel, noted that worries about petrol prices are significantly affecting household budgets, with over half of consumers expressing strong concern about fuel costs and nearly one-third reporting a tangible impact on their finances.

“As the autumn budget draws nearer, with the Chancellor’s announcement scheduled for October 28, shoppers are expected to remain cautious, continuing to seek out promotions to ease budget constraints,” McKevitt added.

In contrast to the general inflationary trend, the price of chocolate confectionery has declined by approximately 3% compared to last year, offering a slight reprieve for consumers ahead of Halloween. Around 1.2 million households purchased a pumpkin in the four-week period, marking a 10% increase year on year. McKevitt suggested that the reduced chocolate prices, following substantial rises in 2025, provide some relief as the festive season approaches, although they do not fully offset earlier cost increases.

While products such as hot chocolate and soup experienced a notable growth in sales from August to September—41% and 35% respectively—their sales remain below last year’s levels, declining by 20% and 4% respectively.

Additional data from NielsenIQ showed that total supermarket tillsales grew by 1.4% in the four weeks to October 3, a slowdown from the previous month’s 1.8% growth, reflecting continued consumer caution. Seasonal products typically associated with warmer weather remained popular into September, with mineral water sales up 17.4% and ice cream sales increasing by 11.7%.

Among major supermarket chains, Asda was the only retailer to report a sales decline, falling 0.5% over the 12 weeks ending October 4. Meanwhile, Lidl gained market share with a 7.1% sales increase, driven by strong performances in fruit, vegetables, and wine, raising its share to 8.6%. Ocado’s online sales rose by 12.4%, outpacing the sector's overall 5.5% growth in online grocery shopping.

Tesco and Sainsbury’s reported modest sales increases of 1% and 1.3%, holding 27.8% and 15.2% of the market respectively. Aldi’s sales edged up 0.4%, maintaining a market share of 10.5%, while Marks & Spencer’s grocery sales grew by 14.9%. Asda’s market share currently stands at 11.5%.