Picky Bits Drive UK Grocery Sales as Heatwave Cools Inflation 2026

Picky bits have become a summer staple as British shoppers snap up picnic food during the heatwave, while grocery inflation slows to its lowest level in nearly two years. According to new data from Worldpanel by Numerator, spending on potato salad, olives, and coleslaw surged as temperatures soared.

Grocery Inflation Drops to 2.1%

Annual supermarket price growth fell to 2.1% in the four weeks to 9 August, down from 2.6% the previous month. This is the slowest increase since October 2024, as shoppers increasingly turned to promotions to manage costs.

Promotions Hit Highest Level This Year

Nearly one-third of all sales across UK supermarkets were part of a promotion, with 31.3% of sales coming from deals—the highest level this year. This shift helped drive down inflation while boosting volume sales of summer foods.

Picnic Food and Ice Cream Sales Surge

Sales of dips increased by nearly a quarter compared with the same period last year, while coleslaw and potato salad saw similar gains. Quiches, olives, and chilled finger foods also recorded strong increases. Ice-cream and sorbet sales jumped 26%, and frozen fruit soared 48%.

Heatwave Changes Shopping Habits

Shoppers made an extra 6.2 million trips to the cold section compared with last year. Evening meals are now eaten later, with 13% of meals after 8pm. Soft drinks also grew 15% as consumers sought refreshment.

Comparison of Key Metrics

Key Takeaways

• Grocery inflation slowed to 2.1% in August, the lowest since October 2024.
• Promotions accounted for 31.3% of sales, the highest this year.
• Picnic foods like potato salad, coleslaw, and dips saw sales jump ~24%.
• Ice cream and frozen fruit sales surged 26% and 48% respectively.
• Shoppers spent £14.24 less on average, reflecting deal-seeking behavior.

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