Or put another way, an outbreak of food poisoning could be the most rapid way to destroy your reputation.
High standards of hygiene are crucial to prevent food poisoning. They can also help avoid food waste, loss of productivity and prosecutions for not keeping to the rules.
This Handbook gives you a good introduction to the main hygiene regulations. The Highway Code does not tell you how to drive a car; it does explain the rules of how you should behave on the road. Similarly this handbook is not a recipe book telling you how to cook or even how to comply with the rules; it does tell you what the rules are.
A proper understanding of the rules is essential if you are to understand where the risks to your business are and how to control them. Your reputation depends on it.