The United Kingdom’s Retail Price Index (RPI) inflation rate inched higher in May 2026, rising to 3.1% year-on-year from 3.0% in April, according to data updated on 17 June 2026. The figure reflects a modest acceleration in the pace of price increases faced by UK consumers.
On a year-over-year basis, May’s 3.1% reading compares the change in prices with May a year earlier, while April’s 3.0% figure represents the year-on-year change versus April of the prior year. The slight uptick suggests that, although inflationary pressures measured by RPI remain relatively contained, they have not yet begun to ease meaningfully on this measure.
Market participants and analysts often monitor RPI alongside other UK inflation indicators to gauge the broader price environment, given its historical use in wage negotiations, some pensions, and index-linked contracts. The latest data may feed into ongoing discussions about the path of UK inflation and its implications for households and financial markets.
