Consumer group Which? found a host of “dubious” deals were still being offered by some of the UK’s biggest grocery retailers.

The offers included multi-buys that cost more and special offers where products were sold at the special price for most of the year, rather than a limited time.

Which? analysed the prices of 459 products between May 2018 and June 2019 across seven different grocery retailers: Tesco, Sainsbury’s, Asda, Morrisons, Waitrose, Iceland and Ocado.