Warring States of the British Aisles

An infographic segmenting Great Britain by local variations in supermarket chains’ estimated market shares. See my blog post on this topic, Taking Supermarket Sociology (a bit) Seriously.

Warring States of the British Aisles

Sources & acknowledgements

Supermarket locations scraped from each chain’s website. The scrapers are hosted on Scraperwiki, so you can download CSV files here (Asda, Co-op, Morrisons, Sainsbury’s, Tesco, Waitrose)

The major assumption for the calculation of market share was “number of retail square feet” per store format. That was based on store websites, annual reports and wikipedia pages. I’ll put that file up, along with my R code, shortly.

The additional data appended is:

I used MySociety’s excellent MapIt to geocode locations that were not already lat/long tagged. Thanks to Chris Hanretty for a useful lookup file converting between various Westminster Constituency names and codes.