We don't really know anything. Frankly, the Co-op staff my be making assumptions about the breads end destination. I've gone in and bought a load of bread before when I'm having a kids party and making lot's of sandwiches for example. The Co-op is there to sell food, they aren't there to question it's use. Assuming for a minute however, that a cafe is buying co-op bread -Either it is using the shop as it's main supplier of bread (in which case, co-op ought to be able to predict the demand), or they're using it in instances where they've unexpectedly run out (which seems perfectly reasonable to me). Either way, I can't see how co-op is meant to police bread usage,or deny service. There are lot's of other shops on the Lane where you can get generic sliced white bread.