Shoppers form long queues ahead of the opening of a Costco store in Chingford (Photo by Dan Kitwood/Getty Images)

If, as Neil Gaiman said, any civilisation is two meals and 24 hours away from barbarism, ask yourself this: what am I having for dinner tonight?
That might be an easy one for you to answer. But what about dinner four days from now, or six? The fact that many people would find that second question hard or even impossible might just tell us something about the way Britain will be changed by Covid-19.
When I started reporting on politics almost 20 years ago, Tesco and the people who shopped there every Saturday were pretty much the centre of the electoral universe. Tony Blair was almost supernaturally attuned to Tesco shoppers, their concerns about petrol prices and the rest. Tesco, driven by its big-box edge-of-town stores (which also sold petrol), was the company of the moment; even political journalists knew that one pound in every seven spent on British retail went to Tesco.
Then the financial crisis and competition in the market changed British grocers and the way we shop. People suddenly short of cash, or just worried about cash, become reluctant or unable to spend a big slice of their weekly disposable on one big shop on one day. Lidl and Aldi arrived, mostly in the centre of towns in small- and medium-sized stores, not in big boxes. Incumbent supermarkets, too, chased shoppers who wanted to shop more often, to spend smaller sums more frequently.
Tesco tried to keep pace with consumers, with Tesco Metro, a shift that meant many things, including a reduction in staff numbers.
Essentially, Britain became a nation of just-in-time shoppers, making regular and even daily trips to the shops for that night’s dinner. A few years back, the Co-op found that 27% of us chose our evening meal on the day; only 9% of people in its survey planned their meals a week ahead.
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