Allergen mistakes are one of the few food safety failures that can be genuinely life-threatening, which is exactly why UK law treats them so seriously — and why “we usually get it right” isn’t a defence an EHO, or a customer’s family, will accept.
The legal baseline
Under UK food information regulations, any food business must be able to tell a customer if a dish contains any of the 14 major allergens recognised in law: celery, cereals containing gluten, crustaceans, eggs, fish, lupin, milk, molluscs, mustard, tree nuts, peanuts, sesame, soybeans, and sulphur dioxide/sulphites. This applies whether the information is on a menu, given verbally, or provided on request — but it must be accurate and available, not improvised on the spot.
What Natasha’s Law changed
Natasha’s Law, introduced in October 2021, closed a specific gap: food that’s prepacked for direct sale — made on the premises and packaged before a customer orders it, like a sandwich made that morning and put in the chiller — now requires full ingredient labelling with allergens emphasised, not just information available on request. If you sell any grab-and-go items, this is the part most likely to catch a growing operation out, particularly as menus expand or a new supplier changes an ingredient without anyone updating the label.
Where restaurants actually get caught out
- Recipe changes that don’t reach the label or matrix — a supplier substitutes an ingredient, or a chef tweaks a dish, and the allergen information doesn’t get updated to match
- Verbal allergen answers given confidently but incorrectly — a well-meaning staff member guesses rather than checks
- New or temporary staff not trained before their first shift — especially over busy seasonal periods
- Cross-contamination in prep — the recipe itself is allergen-free, but shared equipment or surfaces introduce a risk that isn’t communicated
A practical checklist
- An allergen matrix exists for every dish on the current menu, not just the “popular” ones
- It’s updated the same day any recipe or supplier changes — not on a quarterly review
- Every prepacked-for-direct-sale item has a compliant label with allergens emphasised
- Every staff member, including new starters, is trained before serving customers, not after
- There’s a clear, single point of truth for allergen info — not “ask the head chef if they’re in”
- A record exists of when staff were trained and by whom, in case it’s ever questioned
Why this is a management-score issue, not just a safety issue
Under the Food Hygiene Rating Scheme, allergen management sits within the “management” category alongside your SFBB records — which means weak allergen processes can pull down your hygiene rating even if no incident has ever occurred. It’s assessed on whether the system is robust, not just whether you’ve been lucky so far.
Keeping it current without relying on memory
The businesses that get this right treat allergen information as a living record tied to the menu, not a laminated sheet from eighteen months ago. Rated5 keeps allergen matrices, recipe changes, and staff training sign-off together, so an update to one dish doesn’t rely on someone remembering to update three other places too. See how allergen tracking works in Rated5.