Vendor Reviews · 6 UK suppliers assessed
The UK vendor table.
Every UK-shipping vendor we've independently reviewed, scored on purity testing, certificates of analysis, customer service, shipping integrity, and pricing. Updated quarterly.
PB
Peptide BiosciencesUnited Kingdom · Ships UK (1–2 business days, Royal Mail); international shipping not confirmed on website
Purity99.0% avg
In-house testing only
In-house testing only
Avg price£33 / 10mg
Read reviewTL
Tide LabsUnited Kingdom · Ships UK-wide; same-day dispatch (4pm cut-off), Royal Mail Tracked 24
Purity99.0% avg
Third-party verified, 49 compounds
Third-party verified, 49 compounds
Avg price£28 / 10mg
Read reviewUP
UK PeptidesUnited Kingdom · Ships Not yet verified
Purity0.0% avg
In-house testing only
In-house testing only
Avg price£0 / 10mg
Read reviewPP
Pure Peptides UKNot yet verified · Ships Not yet verified
Purity0.0% avg
In-house testing only
In-house testing only
Avg price£0 / 10mg
Read reviewPL
Peptides Lab UKNot yet verified · Ships Not yet verified
Purity0.0% avg
In-house testing only
In-house testing only
Avg price£0 / 10mg
Read reviewBP
Bluewell PeptidesUnited Kingdom · Ships UK-wide; shipping details per website
Purity99.1% avg
Third-party verified, 69 compounds
Third-party verified, 69 compounds
Avg price£33 / 10mg
Read reviewOur Method
How we rate vendors.
Five dimensions, weighted. We pay for our own samples and send them to an independent ISO-accredited UK lab — vendors never know they're being tested.
01 · Purity
Mass spec results vs labelled mass, from blind samples.
02 · CoA quality
Third-party, recent, batch-specific — or not.
03 · Shipping
Speed, packaging, cold chain integrity where required.
04 · Service
Response time, returns, dispute handling.
05 · Pricing
Like-for-like cost per mg of verified compound.