What is the law prohibiting food and drink in a shop and who regulates it?

The law prohibiting food and drink in certain shops is often governed by health and safety regulations, which can vary by region or country. These regulations are typically enforced by local health departments or regulatory agencies, depending on the jurisdiction. The intent behind these laws is to maintain cleanliness, prevent contamination, and ensure a safe shopping environment for customers. Specific rules may differ, so it's important to consult local laws for precise details.