Built in Britain for serious researchers.

UK Peptides was founded by working researchers who were tired of the British peptide market’s two extremes — overseas grey-market vendors with no paperwork, and rebranded resellers charging premium prices for the same unverified stock. The brief was simple: supply UK laboratories with peptides that arrive cold, correct, and documented.

Today we operate from a small Manchester facility, working with audited synthesis partners and independent analytical laboratories — Janoshik Analytical and Aspen Bioanalytics — to verify every single lot before it enters the catalogue. Lots that fail the ≥98% HPLC purity floor are destroyed, not discounted. We do not stock product we cannot back with a signed third-party Certificate of Analysis.

Every order ships in an insulated mailer with ice packs, dispatched same-day if placed before 6pm GMT, with a tracked Royal Mail service. Most UK mainland addresses receive their order the next working day. Behind the counter, we keep a digital release log that ties every dispatched vial back to its lot number, CoA, and synthesis batch — the same kind of traceability you would expect from a pharmaceutical reagent supplier, not a research-chemical website.