Measures of monthly UK inflation data including CPIH, CPI and RPI. These tables complement the consumer price inflation time series dataset.

The Consumer Prices Index (CPI) and the Retail Prices Index (RPI) measure the changes from month to month in the cost of a representative 'basket' of goods and services bought by consumers within the UK. This involves weighting together price changes in the indices according to household spending patterns for different categories of goods and services so that each takes its appropriate share. At the beginning of each year the weights used to compile both the CPI and RPI are updated using the latest available information on household spending. Source agency: Office for National Statistics Designation: National Statistics Language: English Alternative title: Updating Weights

Comprehensive database of time series covering measures of inflation data for the UK including CPIH, CPI and RPI.

There are a number of differences between the Consumer Prices Index (CPI) and Retail Prices Index (RPI), including their coverage, population base, commodity measurement and methods of construction. Combined, these differences have meant that, for most of its history, the CPI has been lower than the RPI. One of the main reasons to this difference is the method of construction at the lowest level, where different formulae are used in the CPI and RPI to combine individual prices. This difference is usually referred to as the formula effect. This article will investigate similar formula effects present in the inflation measures of other countries, and where necessary will attempt to explain why the magnitude of the formula effect experienced by other countries differs from that of the UK.

Source agency: Office for National Statistics

Designation: National Statistics

Language: English

Alternative title: International Comparison

The 'shopping basket' of items making up the suite of consumer price inflation indices (CPI, CPIH, RPIJ & RPI) are reviewed every year. Some items are taken out of the basket, some are brought in, to reflect changes in the market and to make sure the indices are up to date and representative of consumer spending patterns. This article describes the review process and explains how and why the various items in the inflation baskets are chosen. Source agency: Office for National Statistics Designation: National Statistics Language: English Alternative title: Basket of Goods

Price quote data (for locally collected data only) and consumption segment indices that underpin consumer price inflation statistics, giving users access to the detailed data that are used in the construction of the UK’s inflation figures. The data are being made available for research purposes only and are not an accredited official statistic. From October 2024, private school fees and part-time education classes have been included in the consumption segment indices file. For more information on the introduction of consumption segments, please see the Consumer Prices Indices Technical Manual, 2019. Note that this dataset was previously called the consumer price inflation item indices and price quotes dataset.

Inflation Rate in the United Kingdom increased to 3.80 percent in July from 3.60 percent in June of 2025. This dataset provides - United Kingdom Inflation Rate - actual values, historical data, forecast, chart, statistics, economic calendar and news.

Microdata underlying CPI/RPI.

The consumer price inflation detailed briefing note contains details of the items contributing to the changes in the CPIH (and RPI), details of any notable movements, a summary of the reconciliation of CPIH and RPI, and the outlook, which looks ahead to next month’s release.

Representative items within the Consumer Prices Index including owner occupiers' housing costs, Consumer Prices Index and Retail Prices Index for the basket of goods and services.

Contains price indices, percentage changes and weights for the Consumer Prices Index (CPI), Retail Prices Index (RPI) and the components that make up these indices. Internationally, the CPI is known as the Harmonised Index of Consumer Prices (HICP) Source agency: Office for National Statistics Designation: National Statistics Language: English Alternative title: CPI

Abstract copyright UK Data Service and data collection copyright owner. The Prices Survey Microdata include the underlying price data used by the Office for National Statistics (ONS) to produce the Consumer Prices Index (CPI), the Retail Prices Index (RPI) and associated price indices. The CPI has become the main domestic measure of inflation for macroeconomic purposes in the UK. Since December 2003 it has been used for the inflation target that the Bank of England is required to achieve. The RPI is the most long-standing measure of inflation in the UK, and its uses have included the indexation of pensions, state benefits and index-linked gilts. The study also includes the data underlying the Producer Prices Index. There are four levels of sampling for local price collection: locations/shopping areas; outlets/shops within locations; representative items/goods and services; and products and varieties (price quotes). There are two basic price collection methods: local and central. Local collection is used for most items; prices are obtained from outlets in about 150 locations around the country. Some 110,000 quotations are obtained by this method. Normally, collectors must visit the outlet, but prices for some items may be collected by telephone. Central collection is used for items where all the prices can be collected centrally by the ONS with no field work. These prices can be further sub-divided into two categories, depending on their subsequent use: 1) central shops, where the prices are combined with prices obtained locally, and 2) central items, where the prices are used on their own to construct centrally calculated indices. There are about 130 items for which the prices are collected centrally. The retail price data include the locations containing the shopping outlets from which the price quotes were obtained. These locations are intended to be broadly representative of a central shopping area and the areas where the local shopping population tend to live. The data also include the regions in which those shopping areas are located. Linking to other business studies The producer prices data contain Inter-Departmental Business Register (IDBR) reference numbers. These are anonymous but unique reference numbers assigned to business organisations. Their inclusion allows researchers to combine different business survey sources together. Researchers may consider applying for other business data to assist their research. Latest edition informationFor the thirty-fifth edition (May 2024), monthly Item Indices and Price Quotes data files for January to March 2024 have been added to the study. Main Topics: The Prices Survey Microdata include both retail and producer prices. The retail data include the following files:'backdata' or background information fileslocally collected filescentrally collected item filesitem indices filesprice quote filesClassification of Individual Consumption by Purpose (COICOP) level maps and weights filesThe 'backdata' background information files include:COICOP descriptions and identification codesdescriptions and identification codes for each item (goods and services)location descriptions and identification codes (and the region of the UK)shop codes for each item and locationThe pre-2007 data also include postcodes for the shops. The retail prices data span from 1996 to 2009 (centrally collected item indices), from 1996 to 2013 (annual item indices), from 1st quarter 1996 to 3rd quarter 2016 (quarterly item indices and quarterly price quote data), from October 2016 to July 2023 (monthly item indices and monthly price quote data), and from 1996 to 2013 (locally collected data). The producer prices files span from 1998 to 2021 and include:item and index number codesInter-Departmental Business Register Reporting Unit reference numbers, allowing the data to be matched to other ONS business survey dataindex descriptionsprices for each item/index numberAdditional producer prices files spanning 1996 to 2019 provide only the Producer Prices Indices and summary tables. Other Face-to-face interview

The purpose of this article is to give the estimated effects on the Consumer Prices Index and Retail Prices Index resulting from duty and taxation changes announced in the Budget. This article is simply a helpful guide to users of the CPI and RPI. The Office for National Statistics (ONS) accepts no liability whatsoever for losses of any kind arising as a result of reliance on this note. Source agency: Office for National Statistics Designation: National Statistics Language: English Alternative title: Budget

The purpose of this article is to give the estimated effects on the Consumer Price Indices and Retail Prices Index resulting from duty and taxation changes announced in the Budget. This article is simply a helpful guide to users of the CPI and RPI. The Office for National Statistics (ONS) accepts no liability whatsoever for losses of any kind arising as a result of reliance on this note. Source agency: Office for National Statistics Designation: National Statistics Language: English Alternative title: Budget

Construction Output Price Indices (OPIs) from January 2014 to June 2025, UK. Summary

Data tables containing the indicative impacts of improving private rents data on our headline inflation statistics: the Retail Prices Index (RPI), Consumer Prices Index (CPI) and consumer Prices Index including owner-occupiers' housing costs (CPIH).