Re honey, Thorne's catalogue explains what needs to be on the label. I can't find my current copy atm (usual state of mess in the house...), but I know it needs the following:
Contact name and address (enough so that you can be traced), quantity in jar (both in pounds/ounces and metric, don't know why...), a BBE, and country of origin. I only sell/barter my honey directly, so not sure if it would be different through a shop. With honey you don't need any extra ingredients list, but I think that would need to be on any back label? Allergy info?
I would also think that trading standards might have some info, as they would be the ones chasing you in the first instance.
I am afraid not much help, just think it's a minefield....