Nut allergy affects roughly 1 to 2 per cent of UK adults. In a City office of 100 people, that statistically means one or two colleagues with nut allergies — and potentially one whose sensitivity is severe enough to require carrying an adrenaline auto-injector at all times. For those colleagues, workplace food is not a convenience question. It is a daily safety question. The gap between a caterer who removes nuts from a shared kitchen and one who operates from a structurally nut-free kitchen is the gap between managed risk and eliminated risk.
Why nut allergy is different from most food allergies
Food allergy is an immune-mediated response: the immune system misidentifies a food protein as a threat and mounts a defence. In a nut allergy, the immune system responds to proteins in tree nuts or peanuts. Severity varies. For some people, the reaction is urticaria or digestive discomfort. For others, trace exposure — microgram quantities of nut protein — triggers anaphylaxis: a systemic immune response that causes airway swelling, blood pressure collapse, and without prompt adrenaline treatment, can be fatal.
The critical point for employers commissioning catering is this: there is no safe level of nut exposure for a severely allergic individual. The question is therefore not whether a caterer takes care with nuts, but whether the kitchen environment itself contains nuts at all.
The difference between procedural and structural nut avoidance
Most caterers who describe themselves as nut-aware or nut-careful are practising procedural avoidance: they remove nut-containing ingredients before preparing a nut-free item, clean surfaces between uses, and train staff to take care. These procedures reduce risk but cannot eliminate it. Nut protein is stable and persistent. It survives normal cleaning on surfaces. It becomes airborne when nuts are handled and can settle on food, equipment, and preparation surfaces. In a kitchen that handles nuts regularly, the contamination pathways are multiple and not all of them are controllable through procedure alone.
Structural elimination means the kitchen does not contain nuts. Not 'we remove them before your order' — never had them. No nut protein in the building means no contamination pathways to manage. The risk is not reduced; it is absent.
For employees with anaphylaxis-risk nut allergies, this distinction is not a technicality. It is the difference between a food environment they can trust and one they must treat with ongoing caution.
What a meaningful nut-free guarantee looks like
When evaluating a caterer's nut-free claims, the questions to ask are:
- Are nuts ever present in the kitchen? A shared kitchen with nut-avoidance procedures is categorically different from a kitchen where nuts have never been present. Ask directly.
- Does the allergen labelling cover every item? Under Natasha's Law, every prepacked-for-direct-sale item must carry a full ingredient list with the 14 mandatory allergens emphasised. Peanuts and tree nuts are two of the 14. Confirm that every item — including dressings, marinades, and sauces — carries this labelling.
- Does the supplier chain carry nut risk? A caterer may not introduce nuts into their kitchen, but if their ingredient suppliers do not provide allergen documentation, there is a potential cross-contamination risk upstream. A rigorous caterer verifies supplier allergen declarations.
- What does the precautionary allergen statement say? 'May contain nuts' or 'made in a kitchen that handles nuts' statements are not legally required in all cases, but their presence or absence is informative. A genuinely nut-free kitchen has no basis for a 'may contain nuts' statement.
Employer duty of care and nut allergy
Under the Health and Safety at Work Act 1974, employers have a duty to maintain a safe working environment. When an employer commissions workplace catering, the food provided is part of that environment. There is no specific statutory requirement for employers to use a dedicated nut-free kitchen caterer. However, where a member of staff has a documented severe nut allergy and carries an adrenaline auto-injector, the duty of care is a meaningful consideration when selecting a catering supplier.
The practical argument is straightforward: procedural risk management relies on consistent human behaviour across every order, every delivery, and every service. Structural elimination relies on a fixed property of the kitchen. The latter does not fail due to a lapse in attention.
Vanda's Kitchen: structural nut-free at the facility level
Vanda's Kitchen at Carter Lane operates a 100% nut-free kitchen. No nuts have ever been present in the facility. This is a structural guarantee, not a procedural one: there are no nut contamination pathways to manage because the source of contamination does not exist in the building.
Every item carries full Natasha's Law allergen labelling. The allergen matrix, available at vandaskitchen.co.uk, covers the entire menu. The kitchen also holds independent halal certification through the Halal Friendly List — whole-kitchen certification, not per-item — meaning the allergen and dietary safety framework covers the full diversity of a City workforce.
For organisations commissioning catering for a team that includes colleagues with severe nut allergies, the relevant question is not whether Vanda's Kitchen is careful about nuts. The answer is simpler: there are no nuts in the kitchen.
For genuinely allergen-safe catering across London — independently halal-certified, 100% nut-free and fully allergen-labelled under Natasha’s Law — browse our catering shop or WhatsApp the kitchen.
Frequently asked questions
What is the difference between a nut-free kitchen and a nut-aware kitchen?
A nut-aware kitchen handles nuts but takes precautions — separate equipment, cleaning protocols, staff training — to reduce cross-contamination risk. A nut-free kitchen does not contain nuts at all. For colleagues with anaphylaxis-risk nut allergies, only a structurally nut-free kitchen eliminates the contamination pathways that procedural controls can only manage.
Can a caterer guarantee nut-free if their kitchen also handles other allergens?
Yes. The presence of other allergens in a kitchen does not affect nut-free status. Vanda's Kitchen is 100% nut-free at the facility level — no nuts are present — while handling other allergens including gluten. Each allergen is managed independently. Nut-free is a structural property of the kitchen, not dependent on the absence of all other allergens.
Does anaphylaxis from nut allergy always require direct ingestion?
No. For individuals with severe nut allergy, reactions can be triggered by trace nut protein through cross-contaminated food, shared equipment contact, or in rare cases airborne exposure during active nut handling. This is why the preparation environment — not just the ingredient list — matters for anaphylaxis-risk individuals.
What should an employer do if a member of staff has a severe nut allergy?
Document the allergy, ensure catering suppliers are informed in writing before every order, and review whether the caterer's kitchen is structurally nut-free or merely nut-aware. Check that every item delivered carries Natasha's Law compliant allergen labelling. For the most severe cases, a caterer operating from a dedicated nut-free kitchen removes the reliance on procedural controls.
Are peanuts and tree nuts covered by the same allergen declaration?
No. Under UK food law, peanuts and tree nuts are two separate mandatory allergens within the 14 that must be declared. Peanuts are legumes; tree nuts include almonds, cashews, walnuts, hazelnuts, and others. A caterer claiming to be nut-free should be able to confirm that both categories are absent from the kitchen.
Related: Tree Nut Allergy: The Complete Guide to Which Nuts, Hidden Sources, and Managing It Daily · Nut Allergy in Schools: The Complete Safety Guide for Parents and Staff