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ABOUT THE SHOP PRICE INDEX
SHOP PRICE INDEX
 The Shop Price Index (SPI) is more focused than the ONS Retail Price Index (RPI), as it only tracks price changes on consumer goods purchased in retail outlets. By examining 500 of the most commonly bought goods across 7,500 price points, the SPI provides a monthly indication of the direction of price changes on the high street. This gives an accurate picture of price inflation/deflation of commonly bought goods in shopping locations through the United Kingdom.
There is an Index for the United Kingdom.
The index reflects changes in shop prices month-on-month and year-on-year.
To reflect the shopping habits of consumers, each index has the following areas as sampling points:
• Superstores on out-of-town sites
• Retail Parks
• Town centres
• Local parade stores
• Shopping centres.
In each of these locations, prices are collected from small and large multiples and independents stores of differing types, e.g. grocery, confectionery, DIY, department stores.
The items for which prices are collected reflect standard consumer purchasing patterns in terms of branded/own label split and price distribution.
Data collection is monthly and always in the same stores to maintain consistency.
There are approximately 7,000-7,500 price points collected each period, with a total of 500 items representing the following sectors of purchase.
• Food
• Ambient Food
• Fresh Food
• Non-Food
• Clothing & Footwear
• Furniture & Flooring
• Electrical
• DIY, Gardening & Hardware
• Books, Stationery & Home Entertainment
• Health & Beauty
• Other Non-Food
Each product class category has an individual weighting based on the “All households” expenditure measured in the Family Expenditure Survey. This data is also used to weight the Office for National Statistics Retail Price Index (RPI).
For further information, please contact Siobhan Bentley, 020 7854 8961, or use the Contact Us page.
DATES FOR THE PRESS RELEASE
Click here to download the release dates for the Shop Price Index.
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