Sales across the wider grocery market grew by 20.6% year on year in March, the biggest increase on record according to the latest data from Kantar. During the period customers spent more than £10.8bn on groceries, which was more than is spent at Christmas.

Over the last 12 weeks, supermarket sales grew at the fastest rate in more than a decade, up 7.6%.

The explosion in sales was driven by people shopping more frequently and buying slightly more, with the average UK household spending an extra £62.92 at the supermarket over the last four weeks.