Unfortunately, not everyone sticks to the recommended social distancing guidelines in the 2 local supermarkets that I have visited.
In one of the shops that I visit it is not possible to keep to the recommended 2m distancing, because the isles are too narrow, less than 2m wide, and it is not possible to pass others in the same isle unless one of those wishing to pass their fellow shopper were to climb on top of the shelves which stretch the length of the isle and are around 2m in height. Of-course if this were to be done the shop would need to provide safety harnesses for customers to use so that one does not find one's self in contravention of safe working heights rules and regulations. Provision of ladders at each end of the shelves may also be helpful otherwise there maybe a tendency for customers to attempt "mountaineering" on the sides of the shelves which may result in some "perishable" goods being "soiled" by customers trying to get a "foothold" in the side of the shelves.