Supermarket sales jumped 9.4% in the month to November 1, with 5.9 million consumers buying groceries online during the period, according to market share experts Kantar. 

Grocery sales grew at the quicker rate of 15% in Wales during October as shoppers stocked up amid the ‘firebreak’ coronavirus restrictions.

Sales of premium own-label lines increased £56m across the UK, while shoppers also snapped up home luxuries such as scented candles, potpourri and essential oils for diffusers, which jumped 29% year on year.