There was much grumbling, a bit of argy-bargy in Parliament Square, and right-wing columnists and people with nothing better to do on social media were miffed.
Governments for decades have known from research that the barrier between normal everyday life in the UK and serious civil unrest is a relatively short time span of days when food supplies are interrupted:
From 2010 (no reason to imagine we're much more resilient nowadays):
Nine meals from anarchy
... Britain's ability to feed itself has been in long-term decline, and food prices are reportedly rising in the cold spell. It was only two years ago that droughts in Australia caused a crisis in world grain supplies; in April 2008 food crises affected at least 37 countries and there were related riots in many. As climate change and volatile oil prices destabilise global agriculture, we are becoming more dependent on food and energy imports just as the geopolitics of both make it less likely that the world will generously meet our needs.
This year is the 10th anniversary of the fuel protests, when supermarket bosses sat with ministers and civil servants in Whitehall warning that there were just three days of food left. We were, in effect, nine meals from anarchy. Suddenly, the apocalyptic visions of novelists and film-makers seemed less preposterous. Civilisation's veneer may be much thinner than we like to think.
https://www.theguardian.com/commentisfree/2010/jan/11/nine-meals-anarchy-sustainable-system
You want to see riots? Go for a no-deal Brexit.
Stick that up your campaign spreadsheet, Cummings.