FX.co ★ UK RPI Edges Higher to 3.4% in August, Extending Inflationary Pressure

The United Kingdom’s Retail Price Index (RPI) accelerated modestly in August 2026, rising to 3.4% year-over-year, up from 3.2% in July 2026. The latest data, updated on 16 September 2026, indicate a slight pickup in retail price inflation compared with the same month a year earlier.

On a year-over-year basis, the August figure shows that price growth at the retail level continues to run above the July pace, suggesting that underlying price pressures have not yet fully subsided. The “actual” reading compares August 2026 to August 2025, while the “previous” reading reflects July 2026 versus July 2025, highlighting a continued, if gradual, firming in annual RPI inflation.

The uptick in RPI will likely be monitored closely by market participants and policymakers, as it may influence expectations around the broader inflation trajectory and potential implications for household purchasing power and future policy decisions. However, the data release itself does not provide detail on the specific components driving the increase.