Exploring the complexities of food supply chains by analysing a recent high-profile food business prosecution as a case study. This seminar highlights the potential risks associated with food supply, particularly concerning allergens, and emphasizes the preventive measures that providers can adopt to avert incidents. Delving into the role of Environmental Health Officers (EHOs) in identifying warning signs before an incident, then post-incident investigation techniques, focusing on building a robust case for trial. Also considering the potential strategies employed by defence lawyers to challenge the case. We shed light on the intricacies of food supply and the surrounding legal implications.