UK Peptide Suppliers: Compare Them Side by Side

How suppliers get listed

Any UK-based research-peptide supplier can list by subscribing: £10 a month plus £1 per listing. That's the whole business model:

• No commission on sales
• No referral fees for clicks
• No paid placement in price rankings

Because every supplier pays on the same basis, rankings come down to price per milligram and the data each supplier provides.

What "self-reported" means

Suppliers maintain their own listings through a dashboard: prices, stock, product links and uploaded documents. That keeps listings current, but it also means:

• Prices and stock are supplier-provided. Always confirm the final price on the supplier's site.
• Certificates of analysis are supplier-uploaded and not independently audited unless a listing is marked as staff-verified.
• Claims about third-party testing are the supplier's own statements.

Listing on PeptideCompare is not an endorsement.

The confidence score

Each supplier has a confidence score built from signals we can actually observe:

• Link health. Do product links work? They're checked automatically.
• Documentation. How many listings have a CoA attached?
• Moderated reviews. Reviews come only from one-time invites sent to real customers and are approved by staff before publication.
• Track record. How long the supplier has been listed.

Comparing suppliers properly

1. Open a peptide comparison page to see every supplier listing that compound.
2. Compare price per mg, then factor in delivery.
3. Check the CoA. Our guide to reading a CoA explains what to look for.
4. Visit the supplier's profile in the supplier directory.

Are you a supplier?

Find out how listing works on the for suppliers page.

Research use only

All products are third-party materials for in-vitro laboratory research. They are not for human or veterinary use, and PeptideCompare gives no dosing guidance.