Alternatives to RETA UK in the UK: sellers you can actually verify

RETA UK (reta-uk.com) does not publish a certificate of analysis you can verify in its own name. If that is why you are looking for an alternative, the UK sellers further down do, so you can check the testing yourself before you buy. The Peptide Watch takes no vendor money and links to no seller's shop.

Why RETA UK is on the watch list

RETA UK publishes a page of Janoshik certificates for its GLP-1 range and invites you to verify them at janoshik.com/verify. We did: one example (Tirzepatide 30mg, batch EGB-0526-TR30, task #148589) is a genuine Janoshik report that verifies on Janoshik's own server. But the client named on every certificate is 'EGB', and every batch code begins 'EGB-', so these are the wholesale supplier's blind-test certificates, not RETA UK's own. A genuine supplier certificate proves the supplier submitted a good vial once; it does not prove the stock this reseller ships you is the same. Add the placeholder registered name 'TEST TRADER LTD' (Companies House 17202698) and unusually low pricing, and this is a dropshipper of EGB stock, not an own-name tested seller.

• Why it is on the watch list: Shows a supplier's certificate, not its own
• Trustpilot: 3.8 from 19 reviews, which reflects delivery and service, not what is in the vial
• What it sells: Low
• Domain: Domain registered Feb 2026 · 6 months old

Verified alternatives to RETA UK

Unlike RETA UK, each seller below has been checked to publish a certificate that names the seller itself as the client, not a factory or supplier. Sellers whose verified certificates cover what RETA UK sells are listed first; the full ranked list of 30 is linked underneath.

1. Kensingtonlabs kensingtonlabs.co.uk · own-name Janoshik COA including Retatrutide, Jul 2025
2. Lab77Peptides lab77peptides.co.uk · own-name Janoshik COA including Retatrutide, Jun 2026
3. Velonix Labs velonixlabs.co.uk · own-name Janoshik COA including Retatrutide, Jun 2026
4. Peptideprime peptideprime.co.uk · own-name Janoshik COA including Retatrutide, May 2026
5. Incline Peps inclinepeps.co.uk · own-name Janoshik COA including Retatrutide, Jul 2026
6. Peptology Labs peptologylabs.uk · own-name Janoshik COA including Retatrutide, Jun 2026

Full ranked list: the 30 independently-tested UK vendors. Read the complete RETA UK audit, or check any shop with the free COA Checker.