MyLondon : “Whether checkout or self-service, most people will stick to a trolley-length distance of separation, but no further, and if you ask the person behind you to move you'll most likely be laughed at. "This isn't the fault of supermarket workers, who honestly have enough to be dealing with without telling people to pull their mask out from under their chin and over their face every two minutes."Truthfully, we have only ourselves to blame for the collapse of social distancing in supermarkets."But, if you’re like Tom and want to be more careful to stay away from others then you can try his idea.