actowiz

  Why Sainsburay's is the most structurally interesting UK grocery dataset Sainsbury's is one of the "big four" UK grocers and sits second by market share behind Tesco, holding around 16.3% of the market against Tesco's roughly 28.7%, per Kantar Worldpanel's most recently published 12-week grocery share reading. That alone makes it essential for any UK basket comparison. But there is a more specific reason data teams find Sainsbury's harder than its competitors: it runs three distinct pricing mechanics simultaneously, and they can appear on the same product. The first is the standard shelf price. The second is Nectar Prices, the loyalty-linked price available to Nectar members, which functions similarly to Tesco's Clubcard Prices. The third is Aldi Price Match, where selected products are price-matched to Aldi and flagged as such on the page. These are not variations of the same thing. They have different qualifying conditions, different durations, and...