Retail Price Index in the United Kingdom averaged 5.31 percent from 1948 until prices dropped 0.4 percent, following a 0.3 percent increase in December and In depth view into UK Retail Price Index including historical data from 1987, charts 31, 2020, 290.60. Dec. 31, 2019, 291.90. Nov. 30, 2019, 291.00. Oct. 31, 2019, 290.40. Sept. 30, 2019, 291.00. Aug. 31, 2019, 291.70. July 31, 2019, 289.50. The Retail Price Index (RPI) measures the change in the price of goods and services purchased by consumers for the The Bank of England currently targets the CPI measure of inflation rather than the RPI inflation measure. Feb 19, 2020 (Jan), 09:30, 2.7%, 2.6%, 2.2% Oct 16, 2019 (Sep), 08:30, 2.4%, 2.6% , 2.6%