Tesco and Spar remain two of the more visible supermarket options for shoppers in the United Kingdom, each publishing its own regular weekly specials that can differ meaningfully week to week depending on seasonal stock, regional promotions, and each chain's own pricing strategy. Neither chain publishes identical pricing to the other, so a direct week-by-week catalogue comparison remains the most reliable way to judge which is offering better value on any given shopping list.
Shoppers who regularly split their shopping list between more than one retailer -- buying whichever category is discounted from whichever chain runs the stronger deal that week, for instance -- tend to get the most consistent value overall, rather than committing to a single store's catalogue by default.
Both Tesco's and Spar's current catalogues are available to browse directly, making a quick side-by-side price comparison straightforward before committing to a weekly shop at either Tesco or Spar.