What Happens If a Customer Has an Allergic Reaction to Food You Served?
Food allergies affect approximately 2 million people in the UK, and allergic reactions to food served in restaurants and takeaways remain one of the most serious risks in hospitality.
Food allergies affect approximately 2 million people in the UK, and allergic reactions to food served in restaurants and takeaways remain one of the most serious risks in hospitality. Under the Food Information Regulations 2014 and Natasha's Law (effective October 2021), food businesses must declare the presence of the 14 specified allergens in every dish they serve, whether pre-packed, pre-packed for direct sale, or prepared fresh. An allergic reaction caused by a failure to communicate allergen information correctly can result in criminal prosecution, civil claims, and in the worst cases, a coroner's inquest. The FSA has made allergen management a top enforcement priority, and local authorities are increasingly taking a zero-tolerance approach to businesses that cannot demonstrate robust allergen controls. For food business operators, getting allergen management wrong is not just a compliance issue - it is a matter of life and death.
What happens next
Medical Emergency on Premises
An allergic reaction can escalate within minutes, potentially requiring the use of adrenaline auto-injectors and emergency services. Your staff must know how to respond to a medical emergency, and any delay or mishandling can worsen the outcome and increase your legal exposure.
Regulatory Investigation
The local authority Environmental Health team will investigate the incident, examining your allergen management procedures, menu labelling, staff training records, and communication processes. They will look for systemic failures, not just the single incident.
Immediate Menu and Process Review
You will need to suspend sale of the dish involved and potentially other items until you can verify allergen information across your entire menu. This can disrupt service significantly, especially if cross-contamination risks are identified in your kitchen layout.
Public and Media Attention
Allergic reactions, particularly those involving children, attract significant media coverage. Local press often report on enforcement actions following allergen incidents, and social media can amplify the story rapidly.
The cost to your business
Fines
Failure to provide accurate allergen information is a criminal offence under the Food Information Regulations 2014. Fines are unlimited in the Crown Court, and courts increasingly take a serious view of allergen failures.
Compensation Claims
Civil claims for allergic reactions can be substantial, particularly where hospitalisation, ongoing treatment, or psychological harm is involved. Fatal cases have resulted in multi-million pound inquests and settlements.
Operational Costs
Reformulating recipes, updating menus, retraining staff, implementing new allergen management systems, and engaging food safety consultants all carry costs that must be absorbed quickly.
Your legal exposure
Failure to Provide Allergen Information
Food Information Regulations 2014, Article 44
Food businesses must provide accurate allergen information for all 14 specified allergens for every food item they sell. This applies to written menus, verbal communications, and any pre-packed items. Failure is a strict liability offence.
Selling Unsafe Food
Food Safety Act 1990, Section 7
If a customer is harmed by food containing an undeclared allergen, this may constitute rendering food injurious to health. Prosecutors can bring charges under Section 7, which carries unlimited fines and up to two years imprisonment.
Gross Negligence Manslaughter
Common Law
In fatal cases where allergen failures are found to be reckless or grossly negligent, individuals (including business owners and managers) can face manslaughter charges. Several UK prosecutions have resulted in custodial sentences for fatal allergen incidents.
Fatal allergen cases have led to landmark UK prosecutions
The UK has seen several high-profile prosecutions following fatal allergic reactions in food businesses. These cases led directly to the introduction of Natasha's Law in 2021, requiring prepacked for direct sale food to carry full ingredient labelling. The FSA has reported that allergen-related food safety incidents remain one of the most common reasons for food recalls, with over 50 allergen recalls issued in a typical year.
How to prevent this
Maintain a complete allergen matrix for every menu item
Document the 14 specified allergens present in every dish, including sauces, garnishes, and sides. Update the matrix whenever recipes or suppliers change.
Train every team member on allergen procedures
All front-of-house and kitchen staff must understand allergen risks, know how to check allergen information, and be trained on what to do when a customer declares an allergy.
Implement robust communication between front-of-house and kitchen
Use written allergen alerts on order tickets, not just verbal communication. Ensure there is a clear process for flagging allergen requests that cannot be misunderstood or forgotten.
Prevent cross-contamination during preparation
Use separate utensils, chopping boards, and preparation areas for allergen-free dishes. Clean surfaces thoroughly between tasks and store allergen-containing ingredients separately.
Verify allergen information with suppliers regularly
Suppliers can change recipes and ingredients without notice. Request up-to-date allergen specifications at least quarterly and whenever a new product is introduced.
If it has already happened
Ensure the customer receives appropriate medical attention
The immediate priority is the health of the affected person. Call 999 if there are signs of anaphylaxis. Record the time of the reaction, symptoms observed, and any first aid provided.
Preserve all relevant evidence
Keep samples of the food served, retain the order ticket, and preserve any packaging from ingredients used. This evidence will be requested during the investigation and is essential for your defence.
Review and correct your allergen management system
Identify the root cause - whether it was a recipe error, communication failure, cross-contamination, or supplier issue. Implement corrective actions across all menu items, not just the dish involved.
Retrain all staff on updated procedures
Conduct documented retraining sessions covering the specific failure and the corrective actions. Keep signed attendance records as evidence of the steps you have taken.
Engage a food safety consultant if needed
For serious incidents, an independent food safety audit can identify systemic issues you may have missed and provides credible evidence that you are taking the matter seriously.
How Paddl helps
Digital Allergen Matrix
Manage allergen information for your entire menu in one place. Paddl tracks all 14 specified allergens per dish and flags when supplier changes may affect your allergen data.
Allergen Training Tracking
Ensure every team member has completed allergen awareness training. Set expiry dates and receive automatic reminders when refresher training is due.
Supplier Management
Store supplier allergen specifications, track certification dates, and receive alerts when supplier documentation needs renewal.
Complaint Recording and Analysis
Log allergen-related complaints with full details and use AI-powered analysis to identify patterns that may indicate systemic issues in your allergen controls.
Why this matters
Common questions
What are the 14 allergens I must declare by law?
The 14 specified allergens under UK food law are: celery, cereals containing gluten, crustaceans, eggs, fish, lupin, milk, molluscs, mustard, nuts, peanuts, sesame, soybeans, and sulphur dioxide (above 10mg/kg). You must declare these whether the food is pre-packed, loose, or pre-packed for direct sale.
Can I be personally prosecuted for an allergen incident?
Yes. Under Section 36 of the Food Safety Act 1990, where an offence is committed by a body corporate due to the consent, connivance, or neglect of a director or manager, that individual can be prosecuted personally. In fatal cases, gross negligence manslaughter charges can also apply to individuals.
Is verbal allergen information sufficient?
Verbal communication is legally permitted for non-prepacked food, but you must have a documented system to support it. The FSA strongly recommends written allergen information alongside verbal communication to reduce the risk of human error.
What is Natasha's Law and does it apply to my business?
Natasha's Law (the Food Information (Amendment) (England) Regulations 2019) requires all food that is prepacked for direct sale to carry a full ingredients list with the 14 allergens emphasised. It applies to food prepared on premises and packaged before the customer selects it, such as sandwiches in a display case.
Other compliance risks
Anaphylaxis From Undeclared Allergen
The most severe form of allergic reaction, anaphylaxis from undeclared allergens can be fatal.
Customer Gets Food Poisoning
Understand the legal, financial, and reputational consequences when a customer contracts food poisoning from your food business, and how to prevent it..
Foreign Object Found in Food
Finding glass, metal, plastic, or other foreign objects in food can cause injury and triggers enforcement action.
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