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UK peptide companies compared: who publishes a COA you can actually verify
By Jamie, Editor · The Peptide Watch · updated 3 July 2026
Independent · sells nothing · takes no vendor money · re-checked daily
Most "best peptide company" lists are quietly paid, one vendor seeded at the top, no downside ever mentioned. This one is the opposite. We take no money from any vendor, we rank purely on whether a seller publishes its own-name Janoshik certificate you can check yourself, and, unlike the marketing lists, we also publish a watch list of the sellers you can't verify. Of 173 active UK sellers we audit, only 20 (12%) pass.
How to read this
The green table is the sellers whose testing you can independently verify today. "Own name ✓" means the Janoshik certificate names the vendor itself as the client, not a factory or a borrowed report, so it's their stock being tested and you can confirm it on Janoshik's own site. Price is the cheapest listed BPC-157 10mg, a like-for-like yardstick. Then comes the watch list.
The sellers you can verify (20)
| # | Vendor | Independent lab | Own-name COA | BPC-157 10mg | Trustpilot |
|---|
| 1 | Lab77Peptides lab77peptides.co.uk | Janoshik | own name ✓ Jun 2026 | £24.99 /10mg | 4.4 (10) |
| 2 | Velonix Labs velonixlabs.co.uk | Janoshik | own name ✓ Jun 2026 | n/a | n/a |
| 3 | Biohacklondon biohacklondon.com | Janoshik | own name ✓ Jun 2026 | Expensive | 4.5 (51) |
| 4 | Peptifyuk peptifyuk.com | Janoshik | own name ✓ May 2026 | £27.00 /10mg | 4 (4) |
| 5 | Biohackpeptides biohackpeptides.co.uk | Janoshik | own name ✓ May 2026 | £25.00 /10mg | n/a |
| 6 | Peptideprime peptideprime.co.uk | Janoshik | own name ✓ May 2026 | £18.00 /10mg | n/a |
| 7 | Momentumpeptides momentumpeptides.com | Janoshik | own name ✓ May 2026 | £34.95 /10mg | n/a |
| 8 | Peptology Labs peptologylabs.uk | Janoshik | own name ✓ May 2026 | £29.95 /10mg | 4.7 (26) |
| 9 | Phoenixbiolabs phoenixbiolabs.net | Janoshik | own name ✓ Apr 2026 | £16.09 /10mg | 4.2 (22) |
| 10 | Bodylab Store bodylabstore.co.uk | Janoshik | own name ✓ Apr 2026 | n/a | 4.7 (38) |
| 11 | Ck Peptides ck-peptides.com | Janoshik | own name ✓ Mar 2026 | £23.99 /10mg | n/a |
| 12 | Xlpeptides xlpeptides.com | Janoshik | own name ✓ Mar 2026 | £28.00 /10mg | n/a |
| 13 | Ascendpeptidesuk ascendpeptidesuk.com | Janoshik | own name ✓ Mar 2026 | £30.00 /10mg | 4.2 (8) |
| 14 | Regenix Peptides regenix-peptides.co.uk | Janoshik | own name ✓ Mar 2026 | £30.00 /10mg | n/a |
| 15 | Wolverinepeptides wolverinepeptides.co.uk | Janoshik | own name ✓ Feb 2026 | Normal | 3.2 (1) |
| 16 | Imperialpeptides imperialpeptides.co.uk | Janoshik | own name ✓ 2025-2026 | £29.99 /10mg | n/a |
| 17 | Simplypeptides simplypeptides.co.uk | Janoshik(mixed) | own name ✓ various | £24.99 /10mg | 4.1 (27) |
| 18 | Thoroughbredlabs thoroughbredlabs.co.uk | Janoshik | own name ✓ Sep 2025 | £33.99 /10mg | n/a |
| 19 | Britpeptides britpeptides.co.uk | Janoshik | own name ✓ Sep 2025 | Expensive | 3.1 (10) |
| 20 | Kensingtonlabs kensingtonlabs.co.uk | Janoshik | own name ✓ Jul 2025 | £29.95 /10mg | n/a |
"Best" here is not an endorsement of any product. It is the list of sellers whose evidence you can check. Even a genuine certificate proves a sample was tested once, not that your vial matches it, see what this can and can't tell you.
⚠ The watch list
These are sellers we currently cannot verify: no named independent lab, a borrowed or unverifiable certificate, or, in several cases, one operator quietly running many "rival" shops. Being here isn't proof of a scam; it means the evidence doesn't check out and you're trusting their word. Every claim links to the full sourced audit.
Anglopeptides states its peptides are 'third-party tested' / 'lab tested' to ≥99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: recycles copy/templates shared with other 'brands'.
🕸 Same operator as anglopeptides.com, raccoonpeptides.co.uk, raccoonpeptides.com, registered to the same address, 195-197 Wood Street, London E17.
Anglopeptides states its peptides are 'third-party tested' / 'lab tested' to ≥99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: recycles copy/templates shared with other 'brands'.
🕸 Same operator as anglopeptides.co.uk, raccoonpeptides.co.uk, raccoonpeptides.com, registered to the same address, 195-197 Wood Street, London E17.
Aurapeptidesuk publishes nothing on-site; a certificate is only promised 'on request', i.e. a document they'll email after you've paid, from a lab they won't name. By the time you could even look at it, you've already bought. It's an assurance designed never to be tested before purchase.
🕸 Same operator as biopeptidesuk.com, jeopeptidesuk.co.uk, onlinepeptidesuk.com, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.com, purepeptidesuk.net, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
Biolabshop states its peptides are 'third-party tested' / 'lab tested' to ≥99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: runs contact/orders through WhatsApp; also sells SARMs.
🕸 Same operator as mybiolabshop.com, a shared Facebook pixel, Google Analytics tag, WhatsApp number and contact emails.
Biopeptidesuk is the cleanest of the non-Janoshik sites: it commissions genuine Certificates of Analysis from Analiza Bialek, a real independent lab, with itself as the client. The only mark against it is that it's Analiza, not the Janoshik standard your index is built on, so it sits just outside the independently-tested list rather than among the bad actors. Aggravating: barely a functioning shop.
🕸 Same operator as aurapeptidesuk.com, jeopeptidesuk.co.uk, onlinepeptidesuk.com, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.com, purepeptidesuk.net, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
Imperialsciences shows a genuine Janoshik report to look legitimate, but the client named on that certificate is its wholesale supplier, not Imperialsciences. In other words it has never paid to test its own stock; it has taken a certificate that proves a sample from its supplier's own line, and presents it as proof of what's in the vial it ships. The buyer is shown real-looking science that is, for their purposes, meaningless, there is no link between that certificate and the product they receive.
🕸 Same operator as imperialpeptides.co.uk, the same registered UK company, Research Sciences Ltd (no. 16704368), formerly Imperial Peptides Ltd / Imperial Sciences Ltd.
Accurapeptides states its peptides are 'third-party tested' / 'lab tested' to ≥99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Adoniselitepeptides publishes nothing on-site; a certificate is only promised 'on request', i.e. a document they'll email after you've paid, from a lab they won't name. By the time you could even look at it, you've already bought. It's an assurance designed never to be tested before purchase.
Ajresearchlabs publishes nothing on-site; a certificate is only promised 'on request', i.e. a document they'll email after you've paid, from a lab they won't name. By the time you could even look at it, you've already bought. It's an assurance designed never to be tested before purchase.
What Allmypeptides calls a Certificate of Analysis is its own branded document with the numbers typed in by the seller. No lab letterhead, no verification key, nothing issued by anyone but the shop itself. It is a marketing graphic in the shape of a lab report.
Alpha Peptides states its peptides are 'third-party tested' / 'lab tested' to ≥99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Alphamino shows a genuine Janoshik report to look legitimate, but the client named on that certificate is its wholesale supplier, not Alphamino. In other words it has never paid to test its own stock; it has taken a certificate that proves a sample from its supplier's own line, and presents it as proof of what's in the vial it ships. The buyer is shown real-looking science that is, for their purposes, meaningless, there is no link between that certificate and the product they receive. Aggravating: the certificate's client is literally 'Anonymous'.
Aminopeptides states its peptides are 'third-party tested' / 'lab tested' to ≥99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Astralabs shows a genuine Janoshik report to look legitimate, but the client named on that certificate is Uther Peptide, not Astralabs. In other words it has never paid to test its own stock; it has taken a certificate that proves a sample from its supplier's own line, and presents it as proof of what's in the vial it ships. The buyer is shown real-looking science that is, for their purposes, meaningless, there is no link between that certificate and the product they receive.
This is a sample. Search all 153 watch-listed UK sellers, and the 20 verified ones, from the homepage (139+ more not shown here).
What to actually look for (works on any vendor, anywhere)
1. A batch-specific COA from a named independent lab
Not "available on request," not the vendor's own "in-house QC." If the issuing lab isn't named on the document, you can't verify it. Janoshik and Aspen are the names the serious end of the market uses.
2. The vendor's own name as the client
A real certificate names who paid for the test. If it names a Chinese factory, another shop, or nobody, it's borrowed, and it tells you nothing about the vial they'll send you.
3. It verifies on the lab's own website
Janoshik has a public verify page. Type in the report code; if it doesn't come up, or there's no code at all, treat the PDF as decoration.
4. Identity, not just purity
"99% pure" is meaningless without an identity test (mass spec) proving it is actually the compound on the label. High purity of the wrong thing is still the wrong thing.
5. A recent date and a matching batch/lot
A two-year-old certificate, or one whose lot number doesn't match your vial, tells you nothing about what you are holding.
Where we stand
The Peptide Watch is independent, sells no peptides, and takes no vendor money: no seller can pay to be added, moved up, or kept off the watch list. We evaluate the credibility of a seller's evidence, not the product itself. If any entry here is wrong or out of date, tell us and we'll correct it.
New to certificates? Start with how to verify a Janoshik COA, check one free with the COA Checker, or see the fuller independently-tested list.