The latest index from a UK consumer watchdog has identified the food and drink items that have gone up in price in British supermarkets. Consumer group Which? has reported that grocery inflation is back on the rise again for the first time since May last year.
It recently updated its inflation tracker, revealing which product categories have seen the largest price increases. The experts examine the prices of more than 26,000 food and drink items at eight major supermarkets to see how different products are being affected. It reports a small inflation increase, but warns that it could be a sign of things to come as a result of the conflict in the Middle East and the crisis in the Strait of Hormuz.
In its tracker, Which? revealed that fish is the worst-affected food item in Brotosh supermarkets. It experienced 11% inflation in June 2026 (YoY). There are several reasons for this, including the war in the Middle East as well as the war in Ukraine, with a 35% tariff imposed on Russia following the invasion of Ukraine in 2022.
The inflation tracker compares prices across the same three-month and one-month periods year-on-year, including discounts but not multibuys or loyalty card offers.
It found that the following product groups had the highest annual inflation for the month of June 2026.
The analysis found that Tesco Breaded Chunky Haddock Fillets (350g) and its Breaded Chunky Cod fillets went up from £3.49 to £5.40 in the year, a 54% increase.
Retail experts recently told the Daily Express of the supermarket items that are expected to go up in price as a result of global events, such as conflict and climate patterns.
“Global conflicts, along with climate change, are causing food shortages, supply chain issues and price spikes in the UK and beyond,” said Jim Mellon, an investor and Chief Executive of Agronomics.
Meanwhile, retail analysts at Omnisend said that oil and gas prices will make the transport of goods more expensive, which will eventually be felt in the final price displayed in shops. “That extra cost rarely disappears, and most of Britain’s biggest retailers will likely do anything to avoid it impacting their margins, so unfortunately, it tends to be passed down the chain, while making sure to avoid deterring consumers entirely,” said retail analyst Marty Bauer.