UK Prime Minister Andy Burnham has advised every household in Britain to keep three days’ worth of food and water at home. The advice is part of the government’s new “Be Ready” campaign, which warns that storms, cyber-attacks and hostile states are a growing threat to everyday services.

The campaign recommends storing nine litres of drinking water per person for three days, along with non-perishable food, a first-aid kit, a torch, blankets, cash and a battery-powered or wind-up radio. The aim is to help people manage for 72 hours if a major emergency disrupts electricity, communications, transport or access to essential supplies.

Speaking to BBC Radio 5 Live, Burnham said the advice was about taking sensible precautions rather than causing panic.

The UK has experienced powerful storms in recent years.…