Starting in April 2026, major UK supermarkets, including Aldi, Tesco, Asda, Sainsbury's, and Morrisons, will implement new regulations under the revised Price Marking Order 2004. These reforms mandate standardized pricing labels to enhance transparency and enable consumers to make better-informed purchasing decisions. The changes address the common practice of 'shrinkflation,' where manufacturers reduce product sizes while maintaining or increasing prices. Under the new rules, all price labels must use consistent units such as kilograms or liters, eliminating confusion from mixed measurements. Additionally, loyalty pricing must be displayed alongside standard prices without undue prominence. The legislation expands to cover more packaged goods, ensuring consumers can compare prices effectively across a wider range of products. However, small retailers with a floor space of less than 280 square meters are exempt from these requirements. The goal of these reforms is to provide consumers with clear and transparent pricing information, particularly important in a market where product sizes and promotions vary significantly.