Morrisons was the cheapest supermarket in March 2019 – the first time it’s taken the top spot in 2019. The average price for our basket of 68 branded goods at Morrisons was £136.73 in March, beating Asda by £1.15.
Sainsbury’s, which was the cheapest supermarket in February, took third place. The same basket of branded groceries cost £139.39 there. Tesco remained the fourth-cheapest supermarket for the third month in a row.
At £153.81, the basket at Waitrose was an eye-watering £17.08 more expensive than that at Morrisons – that means Morrisons shoppers saved enough to pick up a bottle of Best Buy Morrisons sparkling wine with their basket of items.
Buying an identical basket of items at online-only Ocado, the most expensive supermarket in February, would have run up a bill of £150.62.
How we compare supermarkets
Each month, we track the prices of popular branded products, including Alpen muesli, Andrex toilet roll, Cathedral City Cheddar cheese and PG Tips tea bags, sold in the six online supermarkets included in the comparison.
Using data from the independent shopping website MySupermarket, we calculated the average price (including discounts, but not multibuys) for each item throughout the month. We added those individual averages up to get the cost of the basket at each shop for the month.
Latest supermarket environmental moves
In our latest survey comparing the best and worst supermarkets, 72% of Which? members told us that the availability of products without plastic packaging or with easily recycled packaging was an important consideration when choosing where to shop in store. Here we take a look at some of the latest initiatives from supermarkets to tackle this issue.
Asda has teamed up with baby-food brand Ella’s Kitchen for a six-month initiative at 37 Asda stores across the UK, designed to encourage shoppers to recycle baby food pouches. Shoppers can fill a freepost envelope with up to 15 plastic babyfood pouches of any kind, before posting them to TerraCycle to be turned into items such as benches and fence posts.
Iceland doesn’t feature in our price comparison, as it doesn’t stock the same range of branded products. In January, it announced a commitment to eliminate plastic packaging for all its own-brand products by 2023. The frozen-food specialist is planning to ensure that all packaging is fully recyclable, too.
Morrisons is planning to sell paper carrier bags in all of its stores from May 2019, at a price of 20p, in a bid to save an estimated 1,300 tonnes of plastic a year. Welsh stores are already offering the Welsh-made paper bags, which are made using paper from sustainable managed forests.
Tesco is trialling recycling points for its own-brand crisp packets, pet-food pouches and plastic bags, enabling customers to dispose of these items without them ending up in landfill. It’s entered into a partnership with Swindon-based Recycling Technologies, which turns waste plastic from items that currently can’t be recycled in to an oil called Plaxx which can then be used to manufacture new plastic products. The trial will be rolled out at 10 of its stores.
Waitrose has joined a Scottish biotechnology company to test a food wrapping film made from waste langoustine shells. The new packaging could be used to replace plastic film on some own-brand fish products within 18 months.