Built around ingredient transparency
Kingsley Nutrition is a UK-based food supplement brand with a straightforward mission: honest formulation, transparent labelling and claims that are grounded in recognised nutritional science.
Why we started
Kingsley Nutrition was founded out of frustration with the supplement market's tendency toward exaggeration. Too many products made sweeping, unsubstantiated claims - promises of transformation tied to no specific ingredient, no dose, no mechanism. We wanted to do the opposite.
Our first product - Slim Coffee Booster - was designed around a simple brief: include ingredients with established, EFSA-recognised contributions to normal body function, at doses that actually meet those claims, in a format that people genuinely enjoy. A morning coffee ritual is something millions of people already have. We built something that fits naturally into that moment.
Every claim on our packaging and website is linked to a specific nutrient at the specific dose per serving. We list every ingredient, every excipient, and every %NRV figure. That is not a differentiator - it should be the baseline. We just happen to hold ourselves to it.
Our editorial commitment
All content on Kingsley Nutrition - product pages, lifestyle articles, FAQs - is reviewed by our in-house nutrition editorial team before publication. We do not use before-and-after imagery, numeric weight-loss promises, countdown timers or artificial scarcity. We do not claim our products cure or treat any health condition.
If an ingredient has EFSA-approved claim status, we state the claim exactly as approved, linked to the specific nutrient at the dose per serving. If it does not have approved claim status, we describe it as traditionally used - nothing more.
Manufacturing & quality
Slim Coffee Booster is manufactured by a GMP-certified contract manufacturer operating to food supplement Good Manufacturing Practice standards. Full ingredient lists and nutrition information are printed on every box and available on this website. Batch-level quality checks are conducted on every production run.
Meet the Editorial Team
Our content is produced and reviewed by a small team with backgrounds in nutritional science, food supplement regulation and wellness journalism.
BSc Nutritional Science (University of Leeds, 2015). Eleven years in food supplement formulation and regulatory affairs. Margaret oversees all product content, EFSA claim verification and ingredient sourcing documentation at Kingsley Nutrition. She writes the brand's lifestyle editorial under her own name and does not use a photograph in line with our editorial privacy policy.
Seven years in UK food law and supplement compliance. Thomas reviews all health claims made on Kingsley Nutrition's website and packaging against the GB Nutrition and Health Claims register and EFSA guidance, ensuring every statement is attributable to a specific nutrient at the dose stated per serving.
Our principles
The commitments we hold ourselves to across every product and every piece of content.
Claim integrity
Every health claim is linked to a specific nutrient at the dose per serving, in line with EFSA-approved statements. No product-level miracle claims.
No dark patterns
No countdown timers, artificial scarcity, before-and-after imagery, body-shaming language or high-pressure sales mechanics. Ever.
Full transparency
Every ingredient, every dose and every excipient listed on pack and online. Nothing hidden. No proprietary blends masking individual doses.
Honest returns
14-day return window, no questions asked, in line with Consumer Contracts Regulations 2013. We don't hide the return process.
Try Slim Coffee Booster
Formulated to our editorial standards - transparent, honest and designed to fit your morning.
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