Retailers also report jump in purchases of wind-up radios and torches to deal with extreme weather and cyber-attacks

Sales of tinned foods, bottled water, wind-up radios and torches have surged after the UK government advised households to prepare for emergencies.

Retailers have reported a jump in sales of items linked to preparation for emergencies such as extreme weather or cyber-attacks. The Be Ready campaign was launched last week with the aim of persuading households to lay in supplies to last 72 hours.