Retail Price Index Stocks List
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In the United Kingdom, the retail prices index or retail price index (RPI) is a measure of inflation published monthly by the Office for National Statistics. It measures the change in the cost of a representative sample of retail goods and services.
As the RPI was held not to meet international statistical standards, since 2013 the Office for National Statistics no longer classifies it as a "national statistic", emphasising the consumer price index instead.
However, as of 2018 the UK Treasury still uses the RPI measure of inflation for various index linked tax rises.