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Release: Consumer Price Indices, September 2012

Released: 16 October 2012 Next edition: 13 November 2012


Richard Campbell


Telephone: +44 (0)1633 456900

Categories: Economy, Prices, Output and Productivity, Price Indices and Inflation, Consumer Price Indices, Consumer Prices Index, Retail Prices Index

Frequency of release: Monthly

Language: English

Geographical coverage: UK

Geographical breakdown: Country

  • The Consumer Prices Index (CPI) annual inflation stands at 2.2 per cent in September 2012, down from 2.5 per cent in August. This is the slowest rate of inflation since November 2009, when it was 1.9 per cent. The majority of the downward pressure to the change in the CPI came from the housing & household services sector with September 2011’s utility bill rises falling out of the index calculation. There were significant upward pressures from the transport (predominantly motor fuels), recreation & culture and miscellaneous goods & services sectors. The CPI stands at 123.5 in September 2012 based on 2005=100.

  • The Retail Prices Index (RPI) annual inflation stands at 2.6 per cent in September 2012, down from 2.9 per cent in August. As with the CPI, by far the largest downward pressure to the change in the RPI came as a result of September 2011’s utility bill rises falling out of the index calculation. The majority of the upward pressure to the index came from an increase in the price of motor fuels. The RPI stands at 244.2 in September 2012 based on January 1987 = 100.

The Consumer Price Indices dataset contains 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)

CPI and RPI Reference Tables, September 2012: (1.28 Mb Excel sheet) This spreadsheet pulls together the numerous tables that were previously published in the old style Consumer Price Indices Statistical Bulletin and Focus on Consumer Prices publication. A correlation index is included to show the old and new naming conventions and where the tables were previously published for example: RPI All items 1947 -2011 or RP02 & Table 4.1 in Focus is now the new Table 20

Personal Inflation Calculator (PIC): This interactive application allows you to enter your own spending patterns to generate a personal inflation figure. (Note - requires an SVG-enabled web browser, such as Firefox, Safari or Chrome). Further information on the PIC, including how the calculator works and how to calculate your personal inflation rate, can be found in the article ‘The Personal Inflation Calculator’ on the Labour and Market Review (476.1 Kb Pdf) web page

Further information on the CPI and RPI: Includes details of the methodology used to construct the indices, brief and quick guides to inflation and articles on various aspects of the CPI and RPI

Consumer Prices Advisory Committee (CPAC) Homepage : This page contains links to CPAC papers covering a range of topical consumer price statistics research including the inclusion of owner occupiers' housing costs into the CPI

National Statistician's consultation on options for improving the Retail Prices Index: The National Statistician invites views on options for amending the way the Retail Prices Index (RPI) is constructed at the lowest level of aggregation. The consultation also includes a proposal to change the way private housing rental prices are measured in the RPI and CPI through the use of a new data source. Views are also sought on this proposal.

Reflecting owner occupiers’ housing costs in a new additional measure of consumer price inflation: At its 30 April 2012 meeting, the Consumer Prices Advisory Committee (CPAC) recommended the rental equivalence method for reflecting owner occupiers’ housing costs in a new additional measure of consumer price inflation. The subsequent public consultation closed on 31 August. A formal summary of responses to this consultation will be published within the next two months.

These National Statistics are produced to high professional standards and released according to the arrangements approved by the UK Statistics Authority.

Content from the Office for National Statistics.
© Crown Copyright applies unless otherwise stated.