Consumer Prices Index and Retail Prices Index: Updating Weights
Source: data.gov.uk (2018-03-19)

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

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- Consumer Prices Index and Retail Prices Index - updating weights
Consumer Prices Index and Retail Prices Index - updating weights: 2015

The ‘shopping baskets’ of items and their associated weights used in compiling the various measures of consumer price inflation are reviewed and updated each year to ensure the indices are representative of consumer spending patterns.

(https://uksa.statisticsauthority.gov.uk/about-the-authority/uk-statistical-system/types-of-official-statistics/) Contact: Josh Beeson (mailto:xxx@xxx.xx)

Release date: 24 March 2015

About this article

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.

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- Consumer Price Inflation: 2015 Weights (pdf, 442.2 kB) (/file?uri=/economy/inflationandpriceindices/articles/consumerpricesindexandretailpricesindexupdatingweights/2015/weightsarticle2015finalwithextratables_tcm77-399921(1).pdf)
Contact details for this Article

Josh Beeson xxx@xxx.xx (mailto:xxx@xxx.xx) Telephone: xx-xxxx-xxxx

Related publications
- Consumer price inflation, UK: November 2025 (/economy/inflationandpriceindices/bulletins/consumerpriceinflation/november2025)
- Consumer Price Inflation Basket of Goods and Services: 2016 (/economy/inflationandpriceindices/articles/consumerpriceinflationbasketofgoodsandservices/2016)
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