What is Datacentre?

Datacentre gives you key figures and forecasts to help you build strong business plans. It covers over 400 of the world’s largest retail groups and almost 1,000 operations.

Our interactive tool makes it quick and easy to create customised data reports for the retailers, markets and channels you need. IGD’s team of global retail analysts ensure the numbers are robust and reliable, giving you the confidence to put them at the heart of your planning and assessment.

Methodology: how do you build your numbers?

Our primary research programme sets us apart. Our unique retailer and supplier relationships enable us to get to know markets from the ground up. We build our insights through our global research and travel programme, backed up by comprehensive desk-based research. We take insights from a wide range of sources, including company reports, releases and filings, analyst briefings and research notes, regulatory bodies and global news services.

Our figures are based on published retailer results, with an estimate for channel/format breakdowns (as not all retailers provide this breakdown).

We use market size data from national statistics offices, so we have a common methodology across all the countries we cover.

View our measure, format, and country definitions.


We use retailers’ past performance and our knowledge of their future plans to update our forecasts.

Often that information is taken from the retailer’s published annual reports, and their press releases. In other cases, we use a variety of sources, including our own contacts around the world and our experience of visiting retailers and their stores. Our primary measures are Sales, Stores, and Space.

When we forecast, we look at the retailer’s past performance in each market and channel, how that market and channel are evolving, and how economies are expected to behave. We bring all these factors together to project five years into the future. As we do that, we keep an eye on what that does to competitors’ relative positions in the market.

How can I calculate forecasted channel shares, or channel year-on-year (YOY) growth as a %?

This is a calculation the team can carry out for you, based on the retailers we track in Datacentre. Please contact [email protected]

Timings and Financial Years

  • The timing of financial years differs between retailers and is usually determined by their home market. Some retailers have a financial year reflecting the calendar year, while for others it may end in March, or any other month
  • If most of a retailer’s financial year occurred in one calendar year, we record the sales against that calendar year. For example, AEON’s fiscal year 2018 runs from 31 March 2017 to 28 February 2018. So we record the sales against 2017 in Datacentre

When do retailers get updated?

We aim to update numbers for significant retailers one month after they publish their results. This may take longer for smaller retailers.

How can we tell which numbers are actuals and which are forecasts?

Contact [email protected] to find out which are estimates and actuals.

Are the sales and forecasts in Datacentre at constant prices or do they include inflation?

The retailer sales are in nominal terms (or current prices), which means they include inflation. These figures exclude VAT, as do our modelled market sizes.

You can calculate the real values by using the Consumer Price Inflation measure in the tool, in the ‘Add Measures’ section. You can arrive at real values by taking inflation away from nominal sales.


Where possible, we record financial performance data in domestic currencies.

The exchange rates are updated on an annual basis, using the average prices for the year.

Note that these exchange rates may differ from those used by retailers, and therefore lead to differences to published figures.

Retailer Relationships

Companies operating grocery stores have many different organisational structures. We use a standardised approach to manage this variation:

  • The business entity that goes to market, i.e. the sales-generating unit, is termed the "retailer"
  • A retailer could be a company, like Lawson in Japan, or part of a larger organisation; for example Marionnaud is part of AS Watson. We only cover parent companies where they are involved in retailing (e.g. we don’t cover Hutchison Whampoa because all its retail activities are contained in AS Watson)
  • A variety of potential ownership methods, often accountancy-based (e.g. consolidation) or structural (e.g. franchising) determine where operators belong
  • We assign retailers to groups if the group has managerial control of the retailer
  • Mergers and acquisitions – to avoid duplication, we assign the acquired business to its acquirer for full years of trading, on an estimated annualised basis
  • Franchise partners are retail companies that have entered into a franchise agreement with another retail group (e.g. Robinsons Convenience Stores in the Philippines is a franchise partner of AEON). You can see data from the point of view of the franchisor (Robinsons, in this case) or the franchisee (AEON). Our Datacentre query tool enables you to remove the sales from the franchisee (e.g. you can see AEON with Robinsons Convenience Stores or without). For franchisors, sales shown are net retail sales, not the revenue from wholesale sales to franchisees
  • Franchised stores are usually managed directly by the franchisor and include many different independent owners (e.g. Lawson convenience stores in Japan are mostly franchised to independent store owners). You can find the data by selecting the franchise owner from the query tool. Sales shown are net retail sales, not the revenue from wholesale sales to the franchise store

Retailers / Channels / Formats

Do you cover all retailers?

We aim to include the key retailers in every market we cover, though there will be some we don’t track (we do not include traditional markets, independent retailers, forecourt operators or symbol groups, for example). However, we are always working to improve Datacentre, so do contact us if there’s a retailer you would like to see.

Q: Can I sum all the sales in Datacentre for a particular channel to get a total channel view?

A: No. Datacentre records sales from the main retailers in each country. The sum of these retailers' sales therefore excludes smaller retail outlets and traditional trade that we don't track.

Q: Kantar market shares look different to yours. Why?

A: Please contact Kantar for information on their methodology, although a key difference is that Kantar figures are based on shopper survey results whereas IGD uses national statistics and published retailer results.

Q: Where can I find your market shares?

We publish our own annual market shares. Visit the ‘Market’ section at the top of Retail Analysis, select the country you’re interested in, and click the ‘At a glance’ button in the orange tool bar. You’ll be shown a market share pie chart . The size of ‘other’ is made up of other modern retailers we don’t track, as well as traditional trade.

Separately, we do also publish 12-week UK Kantar market shares

IGD's market shares differ from panel-based or till-roll market shares (e.g. from Nielsen, Kantar Worldpanel etc) due to the different methodologies. The latter are based on limited categories/retailers and use different definitions of the 'grocery retail market'. Find out more about our methodology here.

Q: How are sales for non-grocery calculated?

A: Non-grocery sales are the sales from a retailer’s specific non-grocery operations (eg Financial Services, Property, or Fuel). Non-grocery items sold within majority grocery stores (Supermarkets, Convenience stores, etc) are included in grocery sales, since they will only comprise a small proportion of total sales.

Countries / Regions

Q: Where can I find compound annual growth rate (CAGR)?

A: This is a specialised calculation the team can carry out for you. Please contact [email protected]

Q: Can I get channel growth by region?

A: This can be calculated based on the sales by format of the retailers we track. The team can carry out this calculation for you. Please contact [email protected]


If you need further help, please email or call the team at: [email protected] or +44 (0) 1923 851954.