Supermarket convenience stores ‘charge up to 21% more than their larger branches’

Which? study of 42 popular items such as pasta and milk revealed price difference even greater for loyalty card members

Shopping at a local convenience store can cost you up to a fifth more than buying the same items at larger branches of the supermarket chains who own them, according to a new study - with the difference even greater for loyalty scheme members.

Which? compared the cost of 42 popular grocery items - from cheese and pasta to blueberries and ice-cream - on three occasions in June and July at the largest supermarket-branded convenience chains - Morrisons Daily, Sainsbury's Local and Tesco Express - against prices at their full-sized supermarkets.