Almac Group
HighCraigavon, Northern Ireland, UK
GMPCOA
Privately held CDMO with peptide synthesis from discovery to commercial scale.
- Model
- CDMO
- Manufacturer?
- Yes
Peptide Manufacturers in the United Kingdom
11 companies are listed as peptide manufacturers and suppliers in the United Kingdom. 2 have a regulator record of GMP manufacturing. 2 score High (90 or more).
Ordered by score. Scores follow the published rules and are not affected by paid placement. Updated 2026-11-13.
Peptide CDMOs (2)
Sterling Pharma Solutions
HighCramlington, United Kingdom
GMP
API CDMO with sites in the UK, Ireland and the US. Its Cork, Ireland facility focuses on peptide manufacturing and large-scale chromatography.
- Model
- CDMO
- Manufacturer?
- Yes
Peptide API and research peptide manufacturers (2)
AltaBioscience Ltd
MediumRedditch, United Kingdom
UK lab in Redditch that synthesizes custom research peptides and peptide libraries and also runs UKAS-accredited amino acid analysis and protein sequencing.
- Model
- Manufacturer
- Manufacturer?
- Yes
Peptide Protein Research Ltd
MediumBishops Waltham, Hampshire, United Kingdom
UK custom peptide maker trading as Peptide Synthetics. It says it synthesizes every peptide in its own Hampshire laboratory and outsources none.
- Model
- Manufacturer
- Manufacturer?
- Yes
Research peptide suppliers (7)
Resellers of research-use-only peptides. Products are not for human consumption.
POE - Peptides of England
MediumSalford, United Kingdom
COA3rd Party
UK research peptide reseller operated by JUICE IT UP LTD, offering batch lookup of supplier and third-party documents.
- Model
- Retail Research Peptides
- Manufacturer?
- Reseller
Verified Vials (RKCKMJ LTD)
MediumBelfast, United Kingdom
COA3rd Party
Belfast-registered research peptide seller publishing HPLC purity, LAL endotoxin certificates and SDS files for each product.
- Model
- Retail Research Peptides
- Manufacturer?
- Reseller
Mercia Research Limited
MediumLondon, United Kingdom
COA3rd Party
London research peptide seller (Companies House 17189709) with lab-hosted Janoshik reports covering purity, endotoxin and heavy metals; also sells pre-filled pens.
- Model
- Retail Research Peptides
- Manufacturer?
- Reseller
Pep Labs UK
MediumLiverpool, United Kingdom
COA3rd Party
Liverpool research peptide shop that provides batch COAs on request and states third-party testing for purity, endotoxin, microbial counts and heavy metals.
- Model
- Retail Research Peptides
- Manufacturer?
- Reseller
Peptide Central UK Ltd
MediumLondon, United Kingdom
COA3rd Party
London research peptide retailer (Companies House 17350045) with a COA library of Janoshik reports listed by product and batch.
- Model
- Retail Research Peptides
- Manufacturer?
- Reseller
Peptides Online (South Studios Ltd)
MediumSutton, United Kingdom
COA3rd Party
UK research peptide shop, a trading name of South Studios Ltd, that says every batch is tested by Janoshik and posts COA PDFs.
- Model
- Retail Research Peptides
- Manufacturer?
- Reseller
ThePeptideClub
MediumLondon, United Kingdom
COA3rd Party
London-addressed UK research peptide shop selling vials and peptide pens, with a COA-reading guide but no named testing lab.
- Model
- Retail Research Peptides
- Manufacturer?
- Reseller
More in the United Kingdom
Peptide Manufacturers in other countries
Frequently asked questions
How many peptide manufacturers and suppliers in the United Kingdom are listed?
11 companies. Each listing shows location, business model, documentation and a score from 0 to 100.
Which peptide manufacturers and suppliers in the United Kingdom score highest?
By score: Almac Group (95), Sterling Pharma Solutions (90), AltaBioscience Ltd (75), Peptide Protein Research Ltd (75), POE - Peptides of England (75). Scores measure checkable evidence, not product quality, and paid placement does not change them.
How should I check a supplier before ordering?
Confirm the legal entity, ask for lot-specific certificates of analysis that the testing lab can verify, check FDA warning letters and import alerts, and for GMP material ask for regulator inspection records rather than marketing claims.