Who exactly is going to pay for these 'mystery shoppers' Many shops are already having to employ extra staff to do precisely nothing other than meet and greet, they also have the additional costs of all the paraphernalia of signs, one way systems, sanitation stations etc.
As seen daily on the news, many high street names are disappearing at an alarming rate, the last thing they need is yet more unnecessary expense.
The truth is, social distancing is dead in the water and it isn't making a scrap of difference. It was always very much a case of 'We must do something regardless of how futile it may be'
As far as the situation in pubs is concerned, well done to those who have adapted their beer gardens and arranged the tables to the required spacing.
I imagine the majority of them are working quite satisfactorily at the present time, but are you really going to sit in a beer garden in the depths of winter?