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May 2016: cheapest supermarket basket

Which? compares prices of everyday groceries

Woman walking past vegetables in supermarket

Asda was cheapest for our supermarket comparison basket in May 2016

Asda was cheapest for our monthly supermarket price comparison basket in May, costing £22.50 less than the most expensive store.

We compared 80 branded goods including popular favourites such as Walkers crisps, Heinz Beanz, Ribena and Nescafe Gold Blend.

Asda charged £153.60 for this basket – while online rival Ocado charged £176.11

To find out where Sainsbury’s, Tesco and Morrisons ranked, check out the full results at supermarket prices compared.

Supermarkets in the news

At the end of April Tesco announced that it would no longer run Clubcard Boost events, which doubled the value of its points vouchers on certain dates. The final Boost event is currently running.

Tesco isn’t the first supermarket to change its loyalty card scheme to give you less. In 2015 Sainsbury’s halved the number of Nectar points it awards to shoppers. To find out more about how the different supermarket loyalty schemes compare, check out our page on loyalty cards.

You can also find out what Tesco’s customers think of it by checking out our review of the best and worst supermarkets.

Supermarket price comparison schemes

Some of the supermarkets have price matching schemes, in which they compare their prices against other supermarkets and award shoppers a voucher covering the difference. However, notably both Morrisons and Sainsbury’s have stopped doing this. 

As the schemes vary, we’ve rounded up the differences below. Click the links to find out what the supermarkets’ customers think of them, and to find out if they offer any own-brand Best Buy products:

  • Asda checks against Tesco, Sainsbury’s, Waitrose or Morrisons. Asda will give you a voucher for the difference if it isn’t 10% cheaper
  • Ocado price matches against Tesco and will give you a voucher for the difference
  • Tesco checks your prices against Asda, Sainsbury’s and Morrisons and will deduct money at the time if it’s cheaper elsewhere
  • Waitrose price matches Tesco on branded items and these are the prices it sells for. 

Which?’s price comparison basket

Every month we compare the price of between 75 and 100 grocery items at the main online supermarkets Asda, Morrisons, Ocado, Sainsbury’s, Tesco and Waitrose. 

We use data from the independent shopping website Mysupermarket and average the prices over the month, including discounts but not multibuys. 

The products are all branded items and include a wide range of groceries.

More on this…

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