Take-home grocery sales increased by 2.4% in the four weeks to June 14, 2026, according to the latest data from Worldpanel by Numerator.

The organisation monitors the take-home grocery purchasing habits of 30,000 demographically representative households across Great Britain.

It also found that like-for-like grocery inflation stood at 3.0%, in contrast to March figures, which saw inflation at 4.4%.

According to the report, this offset concerns about "the impact of the conflict in the Middle East filtering through to Britain’s supermarket shelves”. 

The period covered by the latest data coincided with the UK's hottest May day on record and a 10-day heatwave, driving strong demand for summer staples among shoppers.

Sales of fresh beef burgers were up 40%, while fresh prepared salads and chilled dips each grew by 13%, as households "took advantage of the warm weather and wheeled out their barbecues", the report said.  

Fraser McKevitt, head of retail and consumer insight at Worldpanel by Numerator, said: "There's something very British about the way a heatwave changes the weekly shop, and shoppers didn't need much encouragement to fire up the grill and turn to al fresco dining this time around. 

Worldpanel data shows that spending per person on food nearly doubles when households are barbecuing.

Spend per head stands at close to £5.00 for barbecue meals, compared to just over £2.50 for meals prepared inside.

World Cup

With the FIFA Men's World Cup firmly under way, football fan favourites are seeing their highest promotional activity in June for five years.

Beer and cider, snacks and crisps and chilled pizza have all been hotspots for deals, as retailers compete for basket space among fans stocking up ahead of matches. 

Promotions are playing a broader role across the wider market. The share of grocery spending on promotion rose year-on-year for the 39th consecutive month, with 30.4% of all sales now on some form of deal. 

Online grocery continues to grow ahead of the total market. Combined online sales across all grocers rose 9.1% over the period, with nearly a quarter of British households making at least one online grocery purchase. 

"Combined with strong online growth, it points to shoppers who know what they want and are increasingly confident about where and how to find the best deal.

"In short, retailers are having to compete hard for that summer shop," McKevitt added.

Market share

Ocado was once again the fastest growing grocer, with sales up by 13.5% over the 12 weeks to June 14, 2026 compared with the same time a year ago. As a result, Ocado share rose by 0.2 percentage points to 2.2% of the market. 

Lidl attracted more than half a million additional shoppers through the tills over the 12 weeks in comparison to the same period in 2025.

The discounter’s market share rose to 8.7%, up by 0.5 percentage points, which was the greatest increase for any retailer this month. 

Convenience retailer Co-op also returned to market share growth, increasing share from 5.2% last year to 5.3% this year as sales grew by 2.7%. A cyberattack last year affected its figures for 2025. 

Sainsbury’s also grew ahead of the market over the 12 weeks, with spending up by 2.0% and adding 0.1 percentage point of share, meaning Britain’s second largest grocer now accounts for 15.3% of sales. 

Tesco, the UK’s largest grocer, now holds 28.0% market share, with sales growing by 1.2%.

Morrisons share remained flat year-on-year at 8.4%, with sales up by 1.4%.

Asda holds 11.5% share of all sales and Aldi has 10.7% share. 

Sales at Waitrose grew by 1.7% and 2.2% at Iceland. Both retailers maintained the same market share, at 4.5% and 2.2%, respectively.

Beyond the grocers, grocery sales for fast-moving consumer goods at M&S rose by 11.7% over the 12 weeks. 

Inflation

Grocery inflation now stands at 3.0% for the four-week period ending June 14, 2026.

Prices are rising fastest in markets such as fresh unprocessed fish, healthcare lifestyle products and skin care, and are falling fastest in chilled butter and spreads, chilled soft drinks/juices/smoothies and household paper. 

This figure is based on over 75,000 identical products compared year-on-year in the proportions purchased by British shoppers.

According to Worldpanel, it "therefore represents the most authoritative figure currently available",

"It is a 'pure' inflation measure in that shopping behaviour is held constant between the two comparison periods – shoppers are likely to achieve a lower personal inflation rate if they trade down or seek out more offers," Worldpanel said.