I was reading this document on the government website about retailers during a pandemic and it says once we reach alert level 2 & 3 of a pandemic
"Internet operations are likely to be suspended soon after a likely pandemic is confirmed and staff re-directed to keeping stores open"
I think a lot of people were planning to use food delivery services to minimise contact if things get worse and if they became ill themselves but from what I've read that might not be possible? I always use online food shopping but we all might need to make other plans!
assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/85916/flu_food_planning_assumptions.pdf