UK Supplement Brand Launch Compliance Pack: Food Supplements 2003, FIR 1169/2011, CAP/ASA, MHRA Borderline, Primary Authority and Novel Food
A US or international supplement brand entering the UK runs into a regulatory stack that does not map to DSHEA: the Food Supplements (England) Regulations 2003 plus FIR 1169/2011 govern composition and labelling; the GB Nutrition & Health Claims Register controls every claim word; the CAP Code and ASA enforce advertising; the MHRA polices the borderline between food supplement and unlicensed medicine; local Trading Standards enforces at retail; and post-Brexit Novel Food authorisation under retained Regulation (EU) 2015/2283 is run by the FSA. This guide is the brand-launch compliance pack — what each instrument actually requires, where US assumptions break, the Primary Authority partnership that buys consistent enforcement, and the Novel Food gate that determines whether an ingredient is even legal.
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Composition — Food Supplements (England) Regulations 2003 and the Annex I/II lists
SI 2003/1387 (with parallel SIs for Scotland, Wales, NI) defines a food supplement as a foodstuff intended to supplement the normal diet, in pre-dosed form, that is a concentrated source of vitamins or minerals or other substances with a nutritional or physiological effect. Annex I lists the permitted vitamins and minerals (the substance — e.g., vitamin C); Annex II lists the permitted chemical forms (e.g., L-ascorbic acid, calcium L-ascorbate, sodium L-ascorbate). A form not on Annex II cannot be sold in a UK supplement, irrespective of US permissibility. 'Other substances' (botanicals, amino acids, enzymes, probiotics, fatty acids) are not centrally listed under the 2003 Regs and are governed by general food law plus Novel Food (see below) plus MHRA borderline determination.
Labelling — FIR 1169/2011 retained + the supplement-specific composition box
The retained EU Regulation 1169/2011 (Food Information to Consumers, in force in GB via the Food Information Regulations 2014, SI 2014/1855) governs the mandatory food-information rules for supplements: name of the food, ingredient list (allergens emphasised in bold), net quantity, durability date, business name and address (UK or NI address required), country of origin where required, and minimum x-height 1.2 mm. On top of FIR, the Food Supplements Regulations 2003 require a supplement-specific composition statement showing the active substance per dosed unit, the recommended daily intake, a warning not to exceed it, a statement not to be used as substitute for varied diet, and the words 'food supplement' on the principal display.
Claims — GB Nutrition & Health Claims Register + CAP Code + ASA
Post-Brexit the UK maintains its own GB Nutrition & Health Claims Register (the successor to the EU register under retained Regulation (EC) 1924/2006). Every nutrition or health claim used on pack or in advertising must be on the GB register or have an active authorisation application; using an unauthorised claim is a breach of food law and an ASA breach. CAP Code Section 15 (Food, food supplements and associated health or nutrition claims) sets the advertising-specific rules. The ASA can adjudicate publicly (a binding adverse adjudication forces the ad to be withdrawn and the brand goes on a published list), refer to Trading Standards, or for a disease claim refer to MHRA as a borderline medicine.
Borderline medicines — the MHRA line a US disease claim crosses
The MHRA Borderline Section determines case by case whether a product is a food supplement or an unlicensed medicinal product. Two limbs: (a) presentation — if the product is presented (label, advertising, accompanying material) as having properties for preventing, treating or curing disease, it is a medicine by presentation regardless of composition; (b) function — if the product, by its pharmacological, immunological or metabolic action, restores, corrects or modifies physiological functions, it is a medicine by function. Most US 'structure/function' wording survives — 'supports immune function' is allowed if it matches an authorised GB NHC. US disease-implying wording — 'lowers cholesterol', 'treats arthritis pain' — crosses the line and the MHRA can require withdrawal pending a medicinal authorisation.
Enforcement — local Trading Standards + Primary Authority partnership
Local-authority Trading Standards officers sample at retail, issue improvement notices, and prosecute mislabelling and unauthorised claims. With 300+ local authorities in the UK, inconsistent enforcement is the working reality. The Primary Authority scheme under the Regulatory Enforcement and Sanctions Act 2008 lets a brand enter a formal partnership with one chosen local authority (the Primary Authority) and receive 'assured advice' that binds every other local authority across England, Wales, Scotland and NI. For a brand selling nationally it is the single most cost-effective protection — and is now the de facto standard for serious UK supplement firms. Cost: typically £2k–10k/year depending on scope.
Novel Food — the post-Brexit gate run by FSA
An ingredient with no significant history of UK consumption before 15 May 1997 is a Novel Food and needs FSA (England & Wales) / FSS (Scotland) pre-market authorisation under retained Regulation (EU) 2015/2283. An EU authorisation does not carry across post-Brexit — a separate UK application is required (though the FSA's 'common framework' arrangement may allow alignment in some cases). Examples currently in scope: CBD isolates and broad-spectrum extracts (every UK CBD product requires a validated FSA application to remain on sale; products not on the public list are subject to enforcement action), monacolin K above 3 mg/day (banned EU-wide; same posture in UK), certain mushroom extracts, and novel peptides. The FSA validation step is itself ~3–6 months; full authorisation can be 18–36 months.
The 30-day UK launch readiness checklist
Day 1–5: composition gap analysis vs Annex I/II — confirm every active is permitted in its chemical form. Day 6–10: claim gap analysis vs GB NHC Register — re-word any US claim that is not on register, drop or re-engineer any disease claim. Day 11–15: label re-design under FIR 1169/2011 + Food Supplements 2003 — UK responsible person address, supplement composition box, x-height check. Day 16–20: notification — file with the relevant Food Authority (the route varies by local authority). Day 21–25: Primary Authority partnership scoping and assured-advice agreement. Day 26–30: Novel Food triage of every active and supplier — confirm pre-1997 use or active FSA application. The pack at the end of 30 days is what a UK retail buyer (Boots, H&B, Tesco) wants to see before placement.
Standards covered in this guide
Each standard, retailer code or assurance scheme referenced above has its own deep-dive page with scope, audit detail and common pitfalls.
The clauses above aren't theoretical — every one maps to a shipped module and an industry profile. Jump to the parts of the product that turn this guide into evidence on a Monday morning.
Can I use my US Supplement Facts panel on a UK supplement?
No. The UK requires the FIR 1169/2011 nutrition declaration format (per 100 g / per 100 mL or per dosed unit) and the Food Supplements 2003 composition box (active per dosed unit + RDI + warning + 'food supplement'). The US Supplement Facts panel does not satisfy either. Re-design the label for UK before listing; importing US-format stock and over-stickering is a recurring enforcement target.
Is CBD legal as a supplement in the UK?
CBD is a Novel Food in the UK. Only products linked to a validated FSA Novel Food application (on the FSA's public list) can lawfully be sold; products outside the list are subject to enforcement removal. Plus a CBD product still needs to meet Food Supplements 2003, FIR 1169/2011, CAP/ASA claim rules, and not exceed 1 mg controlled-drug content per pack (the MDR exemption). Treat CBD as a regulated launch, not a normal supplement launch.
Do I need an EU representative if I sell in the UK only?
No EU representative is needed for UK-only sale, but FIR 1169/2011 requires a 'food business operator' established in the UK (or in the case of NI, an NI/EU address) on the label. A UK contract regulatory representative is the cheap, standard way to satisfy this without setting up a UK entity. If you also sell into NI under the Windsor Framework, the NI marketing rules align with GB but the address requirement aligns with EU.
What is the difference between a Traditional Herbal Registration (THR) and a food supplement registration?
A THR (Traditional Herbal Registration, MHRA-issued under Human Medicines Regulations 2012) is a medicinal authorisation that allows a herbal product to make a traditional-use indication ('traditionally used for the symptomatic relief of mild anxiety') on a UK label without proving efficacy by trial — based on 30 years of traditional use, 15 in the EU/UK. A food supplement makes no medicinal indication. Many botanicals that are sold as supplements in the US need a THR to make any indication in the UK; without THR they can be sold as food supplements but cannot carry a medicinal-style claim.
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