The UK Treasury is pushing large supermarkets to introduce voluntary price caps on essential groceries like eggs, bread and milk. The initiative comes as Chancellor Rachel Reeves prepares to announce cost of living measures on Thursday, with food inflation rising to 3.7% in April. Supermarkets have reacted furiously to the proposals, which would require grocers to identify and cap prices of basic items.

In return for implementing price controls, the government has offered "incentives" including easing packaging policies and potentially delaying costly healthy food regulation changes. The Treasury maintains these caps would be voluntary, unlike a similar Scottish policy recently condemned as "1970s-style." One supermarket executive called the Treasury plan "a completely ill-thought-out, last-minute idea."

UK food inflation remains a growing concern, with industry warnings it could reach 10% due to Middle East supply chain disruptions. While supermarkets typically operate on tight margins, Tesco recently posted an 8.5% rise in annual pre-tax profits to £2.4bn. The Treasury has also demanded guarantees that British farmers won't lose income from any price caps, though no agreements have been reached in ongoing talks.