UK Supermarkets Lock Best Deals Behind Loyalty Card Paywalls

Tesco, Sainsbury's, and other major UK grocers are increasingly reserving their steepest discounts for loyalty card holders, a shift that is reshaping how households budget for weekly shops.

The practice, often called "loyalty pricing," means a basket of goods can cost 10% to 20% less for shoppers who scan a Clubcard or Nectar card at checkout. Non-members pay the full shelf price. The chains say the model rewards regular customers and funds deeper promotions. Critics argue it effectively penalizes shoppers who opt out or cannot join the schemes.

Tesco, the UK's largest grocer, now runs roughly 8,000 Clubcard Price promotions at any given time, covering everything from fresh produce to household staples. Sainsbury's followed with its Nectar Prices program in 2023, matching Tesco's approach. Both chains have said the loyalty-only discounts help them compete with discounters Aldi and Lidl without cutting prices across the board.

The Competition and Markets Authority (CMA) opened a review of loyalty pricing in early 2024, examining whether the practice misleads shoppers or distorts competition. The regulator said it would assess whether the reference price shown alongside the loyalty price – typically the standard shelf price – is genuine or artificially inflated to make the discount look larger. A CMA spokesperson said the review would report findings by the end of the year.

For households, the math is straightforward. A family spending £100 a week on groceries could save £10 to £20 per trip by using loyalty cards. Over a year, that adds up to £500 to £1,000. The catch is that the savings are only available to shoppers who sign up, share their data, and carry the card or app. That excludes elderly shoppers without smartphones, privacy-conscious consumers, and anyone who forgets their card at home.

Supermarkets defend the model as a targeted way to fund discounts. "Clubcard Prices allow us to invest in lower prices for our most loyal customers," a Tesco spokesperson said. "Without the data from the scheme, we could not offer the same depth of promotion."

Sainsbury's has said its Nectar Prices program has been "incredibly popular" and that the discounts are funded by the efficiency gains from better demand forecasting, not by inflating standard prices.

The CMA's review will test those claims. If the regulator finds that loyalty prices are genuine discounts on fair reference prices, the model is likely to spread further. If it finds evidence of artificial inflation, the grocers could face forced changes to how they display and advertise the deals.

Either way, the era of uniform shelf prices in UK supermarkets is over. Shoppers who want the best deal now have to carry a card.