Re: The bread aisle
What Tesco could do for diabetics (and others) is set up in each store, a low-carb area where we could find all the obscure stuff, the least harmful bread, baking flour, low-carb or no-sugar drinks and all the things we see recommended but can rarely find. Many of these things are probably in the store now but dispersed. If they made them easy to find they would sell a lot more of them, to me anyway.
It would be of great interest and benefit to many shoppers, not just diabetics, so it should be called "the low-carb area" (or shelves or aisle or corner or whatever.) At first it would be small, just one end of one side of an aisle, maybe three metres of shelving, unless and until more items were found to be of special interest to people wishing to avoid high-carbohydrates. It would be a great service to customers and it would soon become a major sales area.