Is Yorkshire Peptides legit? An independent review
Yorkshire Peptides is on the watch list: its certificate can't be verified in its own name, one of 496 of 536 UK sellers that fail this check.
- Certificate
- none found in its own name
- Official website
- yorkshirepeptides.co.uk
- Buyer reports
- Coming soon, visible from 1 November 2026 · tell us about your order
Checked daily against the seller's site, the laboratory's site and the public record. If this seller publishes new evidence, tell us and it is re-checked. Method · data · correction
What we found
Yorkshire Peptides checked 9 October 2026: yorkshirepeptides.co.uk is a live UK storefront with same-day dispatch claims and a WhatsApp contact, selling research peptides (BPC-157, TB-500, CJC-1295, DSIP, HGH and others) each shown with an individual purity result and batch reference (for example, an HGH listing reading '98.2%' tested by HPLC analysis). Several product pages credit 'Janoshik' as the tester by name, and the site invites buyers to 'download and verify yourself', but no task number, key or verify.janoshik.com link was found on any page checked - the claim cannot currently be verified from outside a real order. No company name or number is shown anywhere on the site. Companies House shows a similarly-named YORKSHIRE PEPTIDE RAW LTD, company 17463213, incorporated 16 September 2026, active - but the site displays no company identity at all, so this cannot be confirmed as the same business; the name also differs ('Peptides' vs 'Peptide Raw'). Domain registered 16 December 2025, well before that company's incorporation, which further weakens the link. What would move this listing: a working verify.janoshik.com link, or a company name/number shown on the site to check at Companies House.
New Since 13 October 2026 you can tell us how your order went. Reports go up on this page from 1 November 2026, bad ones as well as good, because UK law doesn't let review sites hide negative reviews. A written note appears only after we have read it.
Tap one to start, about 30 seconds.
How buyer reports work
- Every report is confirmed by email before it counts, and each email address can report on a seller once every 90 days.
- We hold back anything that looks like a seller reviewing itself: an email from the seller's own domain, several reports from the same connection, or a sudden burst in a day. A person checks those before anything shows.
- Tick-box answers are shown only as totals. A written comment appears only after a person has read it. Bad reports go up as well as good ones: UK consumer law (the Digital Markets, Competition and Consumers Act 2024) doesn't let review sites hide negative reviews. We only trim or hold a comment for dosing or health effects, personal details, names of other shops, or accusations we can't check.
- Sellers can reply. If a seller disagrees with what buyers report, it can email [email protected] from its own domain, and we show one response next to the totals, with the date.
- No single thing on this page should decide it. Look at the lab reports, the buyer reports and how you'd pay, together.
Questions people ask about Yorkshire Peptides
Is Yorkshire Peptides legit?
Yorkshire Peptides (yorkshirepeptides.co.uk) is on The Peptide Watch's watch list. It does not publish a certificate of analysis that can be independently verified in its own name, so its quality claims rest on trust rather than checkable evidence. That is not proof of a scam; it means the evidence does not check out.
Does Yorkshire Peptides publish a real, verifiable Certificate of Analysis?
Not one that can be independently verified in its own name. Yorkshire Peptides (yorkshirepeptides.co.uk) publishes per-product purity results and credits 'Janoshik' as the tester, but no task number, key or verify.janoshik.com link was found anywhere on the site.
How do I check Yorkshire Peptides's certificate myself?
Find the certificate on yorkshirepeptides.co.uk and read four things: an independent laboratory is named; the client field names Yorkshire Peptides, not a supplier; the compound line names the peptide you are buying, not only a batch code; and the report opens on the laboratory's own website from its task number and key (verify.janoshik.com for Janoshik). Then compare the batch number on the report with the one on your vial. The free COA Checker on this site runs the first three checks on a photo of the certificate.