Sales of tinned and jarred goods rose 37%, from £58.2 million in the 10 days to 2 November 2025 to £79.5 million over the same period in 2026.
The campaign encouraged people to keep three days' worth of food and water at home. Examples given included bottled water and long-life food that does not need to be kept in a fridge, such as dried fruit and nuts.
The public awareness drive warns that severe weather and cyber attacks could disrupt essential services, and tells British households to make sure they have what they would need if those services were interrupted.
The research indicates that sales of essential goods soared after ministers called on households to prepare for emergencies, with the extra buying spread across ordinary shops rather than concentrated in trolley-filling trips.
Hand sanitiser sales climbed 83% on the same comparison, from £497,000 to £908,000.
Worldpanel said the equivalent of an extra 400,000 people a day bought tinned meat after the launch. The typical amount remained 500 grams, which the firm said suggested a gradual stocking-up rather than a sudden rush. Bottled water sales jumped 67% compared with a year earlier, from £13.6 million to £22.8 million, Worldpanel said.
"Growth came from more people adding the recommended items on the government's checklist to their weekly shop, not from shoppers piling their trolleys high, which is very much in line with what the government wanted households to do,"Worldpanel said. Food firm Princes said on Tuesday that demand for tinned tuna, meat and vegetables had risen following the campaign, adding to the evidence that households were building reserves.