Cheapest supermaket: March 2015 resultsWhich? compares prices of food and groceries

08 April 2015

Woman walking past vegetables in supermarket

Asda was cheapest for our comparison basket in March

Asda was cheapest for our supermarket comparison basket in March 2015 and was £8.35 less than the most expensive supermarket.

Our shopping basket had 77 branded products this month, and would have cost you an average of £146.22 in Asda. The most expensive shop charged an average of £154.57.

You can find out who charged the most for our basket, and see results for Asda, Morrisons, Ocado, Sainsbury's, Tesco and Waitrose for this month and over the past year - just click on supermarket prices compared

Supermarkets in March

Waitrose announced results including a 24.4% drop in its operating profits for 2014. However, it wasn't all bad news as Waitrose's revenue actually increased and its share of the market is 5% higher than a year ago, according to Kantar. The drop in its profits was the result of lower prices and Waitrose said it had in fact attracted 400,000 more customers a week in 2014.

Morrisons also shared its results and said that it had had another year of falling sales. It announced that it will close 23 under-performing M Local stores.

Are the supermarkets you think are the best the ones that are growing or shrinking? Discover which supermarkets score best, according to their customers, by reading the results of our supermarket survey at best and worst supermarkets.

Supermarket price comparison schemes

The main supermarkets all have some kind of price matching scheme, which means they compare prices against some of their competitors. They will often give you a voucher if your supermarket shop would have been cheaper elsewhere. 

However, these schemes do vary. So to make sure you know the difference between them, we've put what the major ones are below:

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

For our supermarket comparison basket research, we use data from the independent shopping website Mysupermarket and average the prices over the month, including discounts but not multibuys. The items are all branded.

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