Evidence-based · Independent · UK

UK research peptide suppliers, rated on evidence

Supplier ratings retain the existing baseline and incorporate new customer reviews submitted on this website automatically.

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Lookalike-domain warning: several suppliers have copycat websites (e.g. Lab77, Biolabshop). Always type the exact domain listed here and check it matches before paying.

Supplier directory

UKPeptideRating/Trustpilot/ML Score: one combined score from the recorded Trustpilot rating and its existing review count, plus new website reviews. Where a usable Trustpilot baseline is unavailable, the original stored overall score is preserved as the baseline. No live feed or ML prediction is implied.

#1

Peptology Labs

UKPeptideRating/Trustpilot/ML Score9.6

Strong Reddit r/UK_Peptide_Sources reports (next-day, good reconstitution); Peptide Watch reports 50+ own-name Janoshik reports Sep 2026 with purity+endotoxin+heavy metals (e.g. task #233900 PT-141 99.966%). TP figure via third-party site; Finnrick 'Peptidolo…

peptologylabs (domain unverified) 85 reviews (85 recorded Trustpilot + 0 site) Details & review →
#2

Imperial Peptides UK

UKPeptideRating/Trustpilot/ML Score9.4

TP reviewers praise verifiable 3rd-party tests (HPLC, heavy metals, endotoxin) and fast delivery; own-name Janoshik COA Aug 2026; small range; little Reddit chatter

imperialpeptides.co.uk 44 reviews (44 recorded Trustpilot + 0 site) Details & review →
#3

UK BioLabs

UKPeptideRating/Trustpilot/ML Score9.4

UK BioLabs presents itself as a research-focused peptide supplier, emphasising scientific standards, quality assurance and product traceability. Its positioning is aimed at research organisations and laboratory customers. Editorial assessment: 8.0/10. The Web…

ukbiolabs.co.uk 37 reviews (37 recorded Trustpilot + 0 site) Details & review →
#4

OP Labs (formerly Oxford Peptides)

UKPeptideRating/Trustpilot/ML Score9.0

Largest TP base; positive delivery; complaints re missing items/tracking/vial quality; Reddit mixed (one user alleges non-working BPC-157, another says vials run out early); no published independent COA found; DEEPER CHECK: product pages offer downloadable pe…

oxfordpeptides.com 574 reviews (574 recorded Trustpilot + 0 site) Details & review →
#6

UK Peptides

UKPeptideRating/Trustpilot/ML Score8.4

Trading since 2012; long-standing UK-Muscle forum recommendations; TP notes delays/non-delivery and some efficacy doubts; claims purity but no published third-party testing found; one source says TP profile was removed over ToS issue

uk-peptides.com 409 reviews (409 recorded Trustpilot + 0 site) Details & review →
#7

XL Peptides

UKPeptideRating/Trustpilot/ML Score8.4

Own-name Janoshik COA Apr 2026; Reddit user says next-day and works; TP mixed on service/quality; stock-outs

xlpeptides.com 29 reviews (29 recorded Trustpilot + 0 site) Details & review →
#8

New Wave Peptides

UKPeptideRating/Trustpilot/ML Score7.5

TP praises speed/service, replies to 100% of negatives; isolated lost delivery/duplicate charge and a few authenticity doubts (20mg product); search summary cited 11 Janoshik assays median 99.8% (not independently opened)

newwavepeptides.co.uk 0 reviews (0 recorded Trustpilot + 0 site) Details & review →
#9

Simplypeptides

UKPeptideRating/Trustpilot/ML Score7.0

Own-name Janoshik COA May 2026; domain only ~11 months old; bank transfer only (no chargeback); conflicting TP figures on source page

simplypeptides.co.uk 0 reviews (0 recorded Trustpilot + 0 site) Details & review →
#10

Lab77 Peptides

UKPeptideRating/Trustpilot/ML Score6.5

Claims own-name Janoshik COA each batch (Aug 2026); compound-buyer.uk blind test genuine; founded late 2025; no TP profile; copycat domains reported incl. lab77peptidesuk.co.uk - verify domain

lab77peptides.uk (per reviewer; copycats exist) 0 reviews (0 recorded Trustpilot + 0 site) Details & review →
#11

Pure Peptides UK (Pure Progress Ltd)

UKPeptideRating/Trustpilot/ML Score6.5

Claims trading since 2013, Companies House 10512948; public COA subdomain coa.purepeptidesuk.com; 46 Marfleet Analytical reports (ID/purity/quantity) per peptideprices.net but no public issuer lookup; lab name not disclosed on own site; Premium tier adds endo…

purepeptidesuk.com 0 reviews (0 recorded Trustpilot + 0 site) Details & review →
#12

PEPEtides UK

UKPeptideRating/Trustpilot/ML Score6.0

Publishes Janoshik reports with task numbers and verification keys (e.g. GHK-Cu #203471 Jul 2026); no CX data found

pepetides.co.uk 0 reviews (0 recorded Trustpilot + 0 site) Details & review →
#16

Biolabshop

UKPeptideRating/Trustpilot/ML Score3.5

TP: missing items, payment problems, unresponsive support (replies to 41% of negatives); Finnrick 1 pass/5 fail (BPC-157 44.56%, Ipamorelin 61.85% purity); lookalike domains reported; some forum users still trust it

biolabshop.co.uk 0 reviews (0 recorded Trustpilot + 0 site) Details & review →

How we score

Disclaimer

These products are sold as research-use-only chemicals, not for human consumption. Many are unlicensed medicines in the UK. Nothing on this site is medical advice or an endorsement of any supplier or product, and none of it is a recommendation to buy or use one. Ratings reflect public information at the time of review and may be out of date. Beware of lookalike domains.