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Release: Consumer Price Indices, Research indices using web scraped price data

Released: 01 September 2015


Ainslie Woods

Prices, ONS

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: Ad-hoc

Language: English

Geographical coverage: UK

Geographical breakdown: Country


Research indices using web scraped data (released 01/09/2015)

An error has been identified in the chained daily index. As a result of the error, the chained daily index was inverted. This error affects Sections 4.1 and 4.2, Figures 1, 2, 3 and 4, and Appendix 2. The data and charts have been updated, and the commentary in the article amended accordingly.

ONS apologises for any inconvenience caused.

In this release

Research indices using web scraped price data - Article (347.3 Kb Pdf)

Research indices using web scraped price data - Appendix tables (2.44 Mb Excel sheet)

Web scraping is a tool for extracting information from the underlying HTML code of websites. ONS has been conducting research into these technologies and, since May 2014, has been scraping prices from the websites of three retailers. In June, ONS released early attempts to create experimental price indices from the data. In this release, we provide updates to the experimental indices, and an analysis of the different methods.

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