Foreign body plastic contamination food recall UK 2026: on 9 April 2026, the Food Standards Agency issued alert FSA-PRIN-16-2026, recalling Tesco Finest Summer Edition Chocolate Affogato Dessert (538g) due to possible plastic contamination. The recall covers all units with use-by dates up to and including April 2027 — a 13-month production window — which points clearly to a systemic process failure, not a single-batch incident. For Technical Managers and Heads of Technical in UK food manufacturing, a recall of this scope is a direct question: how confident are you that your foreign body control programme would have caught this before it reached the consumer?
What Happened
The FSA-PRIN-16-2026 alert, issued 9 April 2026, states that Tesco Finest Summer Edition Chocolate Affogato Dessert (538g) may contain pieces of plastic that make the product unsafe to eat. The recall covers all units with use-by dates up to and including April 2027. Point-of-sale notices were issued and consumers were advised to return the product to any Tesco store for a full refund. The alert does not specify the plastic type, likely source, or detection method — which is typical of FSA public notices, which report the hazard rather than the root cause investigation.
What the date range tells us is significant. A recall spanning 13 months of production almost always means the contamination source is structural — a component on the processing line, a packaging material, or a piece of equipment shedding fragments over an extended period, not a discrete foreign body introduction event.
What Went Wrong — Root Cause Analysis
Without access to the manufacturer's investigation report, root cause can only be inferred from what is publicly known. The 13-month recall scope suggests the most likely failure was in the foreign body prevention programme — not a single breach, but an unidentified contamination source operating continuously within the process.
Under Codex Alimentarius CXC 1-1969 (Rev. 2020), Step 6 / Principle 1 — Conduct a Hazard Analysis — the HACCP team is required to identify all plausible hazards associated with each process step, including physical hazards. Physical hazards from equipment components, packaging materials, and in-process materials must be assessed for likelihood and severity. If plastic shedding from equipment was not identified as a plausible hazard at the relevant step, this is a failure of Codex Principle 1.
BRC Issue 9 clause 4.9 requires a documented foreign body risk assessment covering all potential sources of physical contamination in the factory — machinery casings, plastic components, packaging equipment, conveyors, utensils — with controls specified and proportionate to the risk level. BRC clause 4.9.4 specifically requires that where hard or brittle plastics are present in a production environment, a colour-coded control system or equivalent management procedure is in place.
Why Plastic Is Hard to Detect at End of Line
It is worth being direct about something that does not get said clearly enough in food safety training: plastic is one of the hardest foreign body types to reliably detect at the end of a production line. This is not a reason to ignore detection systems — it is a reason to understand their limitations and not rely on them as a primary control.
Metal detection works on electrical conductivity. Plastic has none, so metal detectors offer no protection against plastic contamination whatsoever unless the plastic has been deliberately manufactured with a metallic additive — which most food-contact plastics are not.
X-ray detection works on density differential. For X-ray to detect a contaminant, it must be denser than the surrounding product. Most food-grade plastics have a density very close to food itself. Thin plastic fragments, films, or flexible packaging offcuts will typically pass through an X-ray system undetected. Detection is more feasible for thick, rigid plastic with a higher density profile — but even then it depends on the orientation of the fragment, the sensitivity settings, and the density of the product itself. A chocolate dessert is a particularly difficult matrix because its density is relatively high and variable. X-ray has a valid role in a layered control programme, but it cannot be treated as a reliable backstop for plastic contamination.
This matters because many HACCP teams designate their X-ray or metal detection unit as a CCP for physical hazards without establishing what that system can actually detect. A CCP requires a validated critical limit. For foreign body detection equipment, that means demonstrating — under actual production conditions, at line speed, in the real product format — that the equipment will reliably detect the target contaminant at the defined minimum size. If that validation has not been done for plastic specifically, the CCP designation is not justified.
How This Should Have Been Prevented
A robust foreign body control programme requires three layers operating in parallel: prevention, detection, and verification. The most important of these — particularly for plastic — is prevention.
Prevention — the foreign body risk assessment (BRC clause 4.9). Every potential source of plastic contamination in the factory must be catalogued and assessed. This means walking the line with a specific focus on materials that could shed into the product: plastic clips, covers, and casings on machinery; conveyor belts and scrapers; packaging components that contact the product; colour-coded utensils and bins. Each identified risk must be assigned a control — inspection frequency, maintenance regime, replacement schedule. These inspections need to be carried out and signed off at a defined frequency, not just documented in a policy that nobody checks. For plastic specifically, a numbered and colour-coded hard plastic register with condition monitoring is the industry standard control — and it sits at PRP level, not at the CCP.
Detection — understanding what your equipment can and cannot do. Where X-ray inspection is in place, it should be validated to confirm what it can detect in your specific product. That validation must use test pieces representative of the actual hazard — the correct material type, density, and minimum fragment size — under production conditions. Regular verification checks using certified test pieces at the start, end, and at defined intervals during each production run confirm the equipment is performing to its validated specification. Those records need to be reviewed, and any failed check must trigger product segregation and investigation. Metal detection offers no protection against plastic and should not be presented as doing so in your HACCP documentation.
Supplier assurance. Packaging materials and ingredient-contact components should be assessed through your supplier approval process (BRC clause 3.5). If a packaging supplier changes a material specification without notification, your supplier agreement must require them to inform you — because a material change may require reassessment of your foreign body risk.
Corrective action and root cause analysis. Every foreign body detection event — whether during in-line detection or identified through a customer complaint — must be investigated to root cause. Codex Principle 5 requires that any deviation from a critical limit triggers a defined corrective action. A systematic look at what allowed the contamination to enter the process is the only way to prevent recurrence. A 13-month recall scope suggests that customer complaint data, if it existed, was not being trended and escalated.
Strengthening Your HACCP System
Physical hazard control sits at the intersection of your HACCP plan, your prerequisite programmes, and your supplier assurance system. In practice, these three areas are often managed separately, which creates gaps. SafetyCore is built to connect them.
SafetyCore's hazard analysis builder requires you to evaluate physical hazards at every process step. If a plastic contamination risk exists at a filling or packaging step, the system requires you to specify the control measure and link it to monitoring records before the plan is approved — you cannot close out a significant hazard without documenting the control. Where a detection system is designated as a control measure, the monitoring records, critical limits, and corrective action workflows are defined in the system and locked in an immutable audit trail.
The prerequisite programme module links your foreign body risk assessment, equipment inspection schedules, and packaging material records directly to your HACCP plan — so when equipment is modified or a material changes, the connection to your hazard assessment is visible. The triggered review feature means any significant change automatically initiates a structured HACCP review, ensuring your physical hazard controls remain current rather than static documents filed after the last audit.
What to Do This Week
A product recall spanning 13 months of production is not a quality blip — it is a systemic control failure. The Tesco Affogato recall is a prompt to review three things before your next BRC or EHO visit: confirm your foreign body risk assessment under clause 4.9 covers every plastic component in your production environment; check that your hard plastic register is current, numbered, and being physically inspected at the right frequency; and if you have X-ray equipment in place, verify that it has been formally validated for plastic detection in your actual product — not just tested at installation with metal test pieces.
End-of-line detection systems are a useful part of a layered defence. They are not a substitute for the prevention controls that should have stopped this plastic entering the process in the first place.
If you are reviewing your HACCP system after reading this, SafetyCore gives you a structured way to do it. Start a free trial at safetycore.co.uk.