The on-line share of all grocery retail in the UK had been bumping along at around 6% for the last four years, then almost doubled, to just under 12%, at the start of lockdown, and has since fallen back to around 10%. During a recent lecture to MSc students the course participants were divided on the future potential of on-line grocery retail and whether the growth seen during the pandemic is sustainable. Some students thought that, having tried on-line shopping for the first-time during lockdown, they would probably continue using it for bulky and long shelf-life items, but also use local stores for fresh produce (probably the worst possible outcome for the grocery retailers as they would be left with delivering the high logistics cost and low margin products). Other students thought that they would go back to in-store shopping and that the current 10% market share would probably fall back to around 7 or 8%. Most of the analysis I have seen shows that UK grocery retail home delivery charges (anything from £1 to £7 dependent on day, time slot etc) do not begin to cover the costs. This suggests that at some point the grocery retailers will have to start passing on the real costs and/or collaborate to improve efficiencies (shared hubs and last mile delivery fleets?). Interested in any views / research on the topic.