Evidence, not marketing. 40+ products · 302 retailers reviewed & tracked, 159 scored
PeptideClear UK

PeptideClear Trust Index

PeptideClear Trust Index

Oliver Mackman · Editorial director · Best Business Loans Ltd (16833937)

Last reviewed: 2026-08-21

Every UK research-peptide retailer we can find is assessed across three separate areas: how transparent they are about lab testing (Testing Transparency, shown as a tier below), whether we can establish who's actually behind the business (Business Transparency, shown in the table), and whether their overall online presentation is clear and responsible (Responsible Practice further down). A retailer can do well on one and poorly on another. These are shown separately, never blended into one number or an A-F letter grade. 302 UK retailers are on file; 159 have been assessed for Testing Transparency.

A Certificate of Analysis (CoA) is a lab document showing what's actually in a batch, confirming purity and identity through independent testing: a retailer publishing real, checkable CoAs lets you verify what you're buying instead of just taking their word for it (full explainer). We identified 302 UK retailers; 159 could be assessed and are scored across six observable signals: per-batch publishing, gating method, named third-party lab, QR-verifiable lookup, dedicated CoA URL, and public stance on third-party testing. The remaining 143 could not be assessed at all and are excluded from scoring rather than marked red: not being able to check is a different fact from failing a check. Full methodology, tier thresholds and last-verified dates are below the table. Want to check a certificate yourself rather than take our score on trust? Here's how, step by step.

The deeper tier

Independent Verification

Independently Verified retailers are shown first in the table below. PeptideClear has gone behind the public evidence and checked it more closely: an 8-area, 54-check digital evidence assessment, substantially deeper than the six-signal Testing Transparency check every retailer gets. It doesn't change or improve a retailer's Testing Transparency, Business Transparency or Responsible Practice results below: those stay visible exactly as assessed. What moves a retailer to the top is that the deeper process was undertaken. How the deeper checks and scope work →

Run a UK research-peptide retailer and want to go through this yourself? Request Independent Verification →

159

Assessed retailers

1

Independently Verified

16

Review pending

45

Material concern

What these mean
Assessed retailers
Every UK research-peptide seller we could assess for Testing Transparency.
Independently Verified
Completed PeptideClear's deeper evidence assessment on top of the free baseline.
Review pending
Not a tier and not necessarily a bad sign: a signal is awaiting manual confirmation before it's classified.
Material concern
An actual, manually-confirmed Responsible Practice finding, not a weak Testing Transparency result.
Jump straight to the full table

Full comparison

Independently Verified

Ascend Peptides UK Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Independently Verified54 checks · 8 areasCompleted 18 August 2026

Strong baseline

Astra Labs Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Bio Hack London Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Bio Peptides UK Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Crown Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Essential Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Imperial Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Lucid Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible
My Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Peptides UK 4U Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Peptiology Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Peptology Labs Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Pure Peptides UK Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Regenix Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Reta Research Visit site ↗
Strong testing transparency Confirmed Clear and responsible
RETA UK Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Simply Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible
The Peptide Code Visit site ↗
Strong testing transparency Confirmed Clear and responsible
XL Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible

Generally strong

Alpha Peptides Visit site ↗
Strong testing transparency Confirmed Clear and responsible
Amino Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
Anglo Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
Benchmark Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
Bio Pulse Labs Visit site ↗
Limited testing transparency Confirmed Clear and responsible
BioPlex Peptides Visit site ↗
Some testing transparency Confirmed Generally responsible, with room for improvement
Black Country Peptides Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Elevate Peptides UK Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Genetic Research Visit site ↗
Some testing transparency Confirmed Generally responsible, with room for improvement
GH Peptides Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Maxx Labs Visit site ↗
Limited testing transparency Confirmed Generally responsible, with room for improvement
Midshire Labs Visit site ↗
Some testing transparency Confirmed Generally responsible, with room for improvement
Neovia Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
New Wave Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
Nexus Peptides Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Nupex Visit site ↗
Limited testing transparency Confirmed Clear and responsible
NXT Gen Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
Opti Peptides Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Peak Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
Peptagenix Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Peptide Lab UK (EU) Visit site ↗
Some testing transparency Confirmed Clear and responsible
PeptideLabUK Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Peptides UK Visit site ↗
Some testing transparency Confirmed Clear and responsible
Power Peptides Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Precision Peptides Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Precision Research UK Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Premier Peptides Visit site ↗
Limited testing transparency Confirmed Generally responsible, with room for improvement
Pure Lab Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
Raccoon Peptides Visit site ↗
Limited testing transparency Confirmed Clear and responsible
RAW Peptides Visit site ↗
Limited testing transparency Confirmed Clear and responsible
Regen Labs Visit site ↗
Strong testing transparency Confirmed Generally responsible, with room for improvement
Revive Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible
Synergetics Visit site ↗
Some testing transparency Confirmed Clear and responsible
The Peptide Company Visit site ↗
Strong testing transparency Confirmed Generally responsible, with room for improvement
Thoroughbred Labs Visit site ↗
Strong testing transparency Confirmed Generally responsible, with room for improvement
Tide Labs Visit site ↗
Some testing transparency Confirmed Generally responsible, with room for improvement
Tru Form Peptides Visit site ↗
Limited testing transparency Confirmed Generally responsible, with room for improvement
UK Peptide Supply Visit site ↗
Limited testing transparency Confirmed Generally responsible, with room for improvement
UK Peptides (ukpeptides.com) Visit site ↗
Some testing transparency Confirmed Clear and responsible
Vionex Peptides Visit site ↗
Some testing transparency Confirmed Clear and responsible

Baseline review pending

Adonis Elite Peptides Visit site ↗
Some testing transparency Under review Clear and responsible
Buy Retatrutide Visit site ↗
Some testing transparency Unable to reconfirm Generally responsible, with room for improvement
CoreLabs Peptides Visit site ↗
In-depth review needed Confirmed Clear and responsible
Dr Peptides Visit site ↗
Some testing transparency Confirmed Baseline review pending
Global Peptides Visit site ↗
Some testing transparency Unable to reconfirm Responsible Practice: not yet assessed
Labgrade Peptides Visit site ↗
Limited testing transparency Unable to reconfirm Responsible Practice: not yet assessed
Nova Peptide Visit site ↗
Some testing transparency Unable to reconfirm Clear and responsible
Peptides 4U Visit site ↗
In-depth review needed Unable to reconfirm Baseline review pending
Peptora Labs Visit site ↗
Some testing transparency Unable to reconfirm Clear and responsible
Retatrutide UK Visit site ↗
Some testing transparency Unable to reconfirm Clear and responsible
Revive Peptides EU Visit site ↗
Limited testing transparency Unable to reconfirm Clear and responsible
RP Peptides Visit site ↗
Some testing transparency Under review Clear and responsible
UK Peptide Lab Visit site ↗
Strong testing transparency Unable to reconfirm Responsible Practice: not yet assessed
UK Peptide Store Visit site ↗
Limited testing transparency Unable to reconfirm Clear and responsible
UK Peptides Visit site ↗
Limited testing transparency Unable to reconfirm Unclear
UK-Peptide Visit site ↗
Limited testing transparency Unable to reconfirm Clear and responsible

Business identity not established

Alphamino Visit site ↗
Some testing transparency Not established Clear and responsible
Aura Peptides Visit site ↗
Limited testing transparency Not established Clear and responsible
Beyond Peptides Visit site ↗
Strong testing transparency Not established Generally responsible, with room for improvement
BioLabs Peptides / BioFlex Peptides Visit site ↗
Strong testing transparency Not established Clear and responsible
Blue Peak Peptides Visit site ↗
Strong testing transparency Not established Clear and responsible
Bluewell Peptides Visit site ↗
Some testing transparency Not established Clear and responsible
Bodylab Visit site ↗
Limited testing transparency Not established Clear and responsible
British Peptides Visit site ↗
Limited testing transparency Not established Clear and responsible
Chroma Peptides Visit site ↗
Some testing transparency Not established Clear and responsible
CK Peptides Visit site ↗
Limited testing transparency Not established Generally responsible, with room for improvement
Elixer Peptides Visit site ↗
Some testing transparency Not established Clear and responsible
Euro-Gen Peptides Visit site ↗
Limited testing transparency Not established Responsible Practice: not yet assessed
LeoLab Visit site ↗
Some testing transparency Not established Responsible Practice: not yet assessed
LeoLabs UK / LeoLab UK Visit site ↗
Limited testing transparency Not established Responsible Practice: not yet assessed
My Reta Visit site ↗
Strong testing transparency Not established Clear and responsible
Peak Peptide EU / Peak Research Co Visit site ↗
Strong testing transparency Not established Clear and responsible
Peptide Barn Visit site ↗
Limited testing transparency Not established Clear and responsible
Peptide Supplies Visit site ↗
Limited testing transparency Not established Clear and responsible
Peptide Supply UK Visit site ↗
Some testing transparency Not established Clear and responsible
Peptide Systems Visit site ↗
Strong testing transparency Not established Clear and responsible
Peptides of London Visit site ↗
Some testing transparency Not established Generally responsible, with room for improvement
Peptides Pharmacy Visit site ↗
Limited testing transparency Not established Responsible Practice: not yet assessed
Pepturion Visit site ↗
Strong testing transparency Not established Clear and responsible
Phoenix Biolabs Visit site ↗
Strong testing transparency Not established Generally responsible, with room for improvement
Pretty Peptide Visit site ↗
Some testing transparency Not established Clear and responsible
ProLab Peptides Visit site ↗
Limited testing transparency Not established Clear and responsible
R&D Peptides Visit site ↗
Some testing transparency Not established Clear and responsible
Research Peptide Visit site ↗
Some testing transparency Not established Clear and responsible
Sculpt Peptide Visit site ↗
Limited testing transparency Not established Clear and responsible
Union Biolabs Visit site ↗
Some testing transparency Not established Clear and responsible
Verified Peptides Visit site ↗
Strong testing transparency Not established Clear and responsible
Vitality Peptides UK (.uk) Visit site ↗
Limited testing transparency Not established Responsible Practice: not yet assessed
Wholesale Peptides Visit site ↗
Limited testing transparency Not established Generally responsible, with room for improvement
Wild Ginger Peptides Visit site ↗
Some testing transparency Not established Clear and responsible

Material concern

Apex Biolab Visit site ↗
Limited testing transparency Confirmed Material concerns
Astra Peptides / Astra Labs Research Visit site ↗
Some testing transparency Not established Material concerns
Biohack Peptides Visit site ↗
Strong testing transparency Not established Material concerns
BioLab Peptides Visit site ↗
Some testing transparency Not established Material concerns
BIOLAB Shop Visit site ↗
Limited testing transparency Unable to reconfirm Material concerns
BIOLABS Visit site ↗
Limited testing transparency Not established Material concerns
Bionik Peptides Visit site ↗
In-depth review needed Confirmed Material concerns
Bonafide Peptides Visit site ↗
Limited testing transparency Confirmed Material concerns
BuyReta Visit site ↗
Limited testing transparency Unable to reconfirm Material concerns
BuyRetaUK Visit site ↗
Strong testing transparency Confirmed Material concerns
C&D Peptides Visit site ↗
Limited testing transparency Confirmed Material concerns
Direct Peptides UK Visit site ↗
Limited testing transparency Confirmed Material concerns
Direct Sarms Visit site ↗
Limited testing transparency Not established Material concerns
DN Lab Research Visit site ↗
Limited testing transparency Not established Material concerns
DTS Pharmacy / Global Pen Peptide Visit site ↗
Limited testing transparency Not established Material concerns
Fusion X Peptides Visit site ↗
Limited testing transparency Confirmed Material concerns
GB Peptides Visit site ↗
Limited testing transparency Unable to reconfirm Material concerns
HCS Pharma Visit site ↗
Limited testing transparency Not established Material concerns
Just SARMS Visit site ↗
Limited testing transparency Not established Material concerns
Kensington Labs Visit site ↗
Some testing transparency Not established Material concerns
MuscleChem Visit site ↗
Limited testing transparency Confirmed Material concerns
Natty Peptides Visit site ↗
Some testing transparency Confirmed Material concerns
NXT Peptides Visit site ↗
Some testing transparency Confirmed Material concerns
OP Labs Visit site ↗
Some testing transparency Confirmed Material concerns
Particle Peptides Visit site ↗
Strong testing transparency Not established Material concerns
Peak Research Co Visit site ↗
Some testing transparency Not established Material concerns
Peptide Labs UK Visit site ↗
Some testing transparency Not established Material concerns
Peptide Works Visit site ↗
Strong testing transparency Not established Material concerns
Peptides Clinic Visit site ↗
Limited testing transparency Confirmed Material concerns
PharmaLabGlobal UK Visit site ↗
Some testing transparency Not established Material concerns
Platinum Peptides Visit site ↗
Strong testing transparency Under review Material concerns
Prime Peptides Visit site ↗
Strong testing transparency Confirmed Material concerns
Pro Peptides Plus Visit site ↗
Some testing transparency Not established Material concerns
Proforma Peptides Visit site ↗
Some testing transparency Confirmed Material concerns
Receptor Chems Visit site ↗
Limited testing transparency Not established Material concerns
Research Peptides UK Visit site ↗
Limited testing transparency Not established Material concerns
Reta Supplier Visit site ↗
Some testing transparency Not established Material concerns
Tested Peptides Visit site ↗
Limited testing transparency Confirmed Material concerns
The Peptide Lab UK Visit site ↗
Limited testing transparency Unable to reconfirm Material concerns
The Peptides Outlet Visit site ↗
Limited testing transparency Not established Material concerns
Trident Peptides Visit site ↗
Limited testing transparency Not established Material concerns
TrimFast Visit site ↗
Some testing transparency Not established Material concerns
UK Peptides (.is) Visit site ↗
Some testing transparency Confirmed Material concerns
UK SARMs Visit site ↗
Strong testing transparency Confirmed Material concerns
Ultra Peptides Visit site ↗
Some testing transparency Confirmed Material concerns

Not yet established

Future Peptides Visit site ↗
Limited testing transparency Confirmed Responsible Practice: not yet assessed
Pioneer Research Peptides Visit site ↗
Some testing transparency Confirmed Responsible Practice: not yet assessed
Prestige Peptides Visit site ↗
Some testing transparency Confirmed Responsible Practice: not yet assessed
Surrey Peptides Visit site ↗
Limited testing transparency Confirmed Responsible Practice: not yet assessed
Sussex Peptides / East Sussex Peptides Visit site ↗
Limited testing transparency Confirmed Responsible Practice: not yet assessed

Status key

Positive · Observation / gap · Material concern · Baseline review pending · Not assessed / reconfirmed / applicable

Colours apply to individual assessment areas and are not an overall retailer rating. Amber covers observations, limited transparency, or a business identity that couldn't be established from the public information checked: a factual gap, not a conduct finding. Red is reserved for an actual, manually-confirmed Responsible Practice finding. Blue means under active review, awaiting manual confirmation: not good, not bad, not scored, and not Independent Verification.

Rows are grouped into the bands shown above the table, not ranked by a hidden overall score: Independently Verified retailers sit at the top regardless of their pillar results (that's disclosed, not implied as "best"), then baselines are grouped from most complete/positive down to material concerns, with "Baseline review pending" as its own band in the middle. Alphabetical order is the tiebreak within a band, never a points system. Baseline Last Reviewed is when the free Testing Transparency / Business Transparency / Responsible Practice check last ran; the date shown under Independent Verification is a separate date for that deeper process. Per-batch publishing, QR verifiability, founded year and Companies House number for each retailer are on its own page, linked above, along with the full CSV/JSON download referenced in methodology.

How Testing Transparency is assessed

Testing Transparency is the first of the Trust Index's three baseline assessments, alongside Business Transparency and Responsible Practice. We apply the same published checklist to every UK research-peptide seller we can find. Sellers don't apply to be included, and nobody can pay for a better result.

We look at whether a seller publishes

  • · a Certificate of Analysis for every batch, not just once for the product line
  • · the certificate somewhere you can see it before buying, without giving an email address
  • · the name of the third-party lab that did the testing
  • · a way to check the certificate against the lab's own records, not just a PDF anyone could edit
  • · a dedicated page or archive for its CoAs, not certificates scattered across product listings
  • · a clear public position on third-party testing, rather than staying silent on it or rejecting it

That produces the Testing Transparency result shown in the table below. It's deliberately narrow: a strong result means a seller is transparent about its testing. It is not PeptideClear vouching for the products themselves, and it says nothing about safety.

For retailers: an ordinary, observable change to a baseline signal (we re-check your site and something's moved) publishes without contacting you first. If a finding looks potentially material, it goes to manual review before anything publishes, not straight live. A formal right of reply, where you're invited to respond before publication, belongs to the separate, paid Independent Verification process, not the free baseline.

Think we've got this wrong? Every score is mechanical, but the research behind it is done by people, and people miss things. Spot an error, an out-of-date signal, or a gap? Tell us: it's worked as a correction, not a complaint.

Email hello@peptideclear.co.uk

Independence

Nobody can pay for a better result

Nobody pays to be included in the baseline. PeptideClear takes no commission, referral fee or listing payment from any of the 159 retailers scored here. The links out are ordinary links with no tracking attached, and the baseline above earns us nothing whether you use them or not.

We are saying this at the ranking rather than in a footer because it is the obvious objection to everything above, and you are entitled to weigh it. Until July 2026 the objection had force: the site did operate affiliate arrangements, and two of the retailers scored on this page were among them. We removed all of it.

The baseline was already mechanical before that change and still is: six observable signals applied identically to every retailer, with every input published in the table above and downloadable as CSV and JSON. Nobody here can move a baseline tier by hand. If you disagree with one, recompute it from our data and show us where we are wrong.

Retailers can pay for the separate, deeper work of Independent Verification, shown above for 1 of the 159 so far. That payment buys the labour of running a defined 54-check process, not a result: it cannot move a baseline tier, and it cannot buy a favourable verification outcome. Full detail, including how that payment is structured: how we are funded.

What buys a better baseline result

Nothing

No commission, no referral fee, no listing fee, no paid placement, and no arrangement under which a retailer could ask for a baseline tier to be reconsidered.

A retailer cannot buy their way out of a red baseline tier, whether or not they have separately paid for Independent Verification. 61 of the 159 are red.

The full position, including what removing affiliate revenue costs us and how Independent Verification is invoiced separately: how we are funded.

Identified, not scored

143 more UK sellers we know about but haven't scored

These aren't a seventh tier and they don't carry a score or letter grade. A CoA tier requires real certificate-of-analysis findings, and we haven't gathered those for these sellers yet, so scoring them anyway, even at the bottom, would assert a verdict we don't have evidence for. Not being able to check yet is a different fact from failing a check.

UA · Too new to vet yet 0 sellers Show list +

Registered UK companies with a named director and Companies House number confirmed, but under 12 months of trading, not enough for a fair CoA review. We re-review each at the 12-month mark. UA is "unavailable," not a grade: it doesn't sit on the A+ to F scale used for scored retailers, on purpose, so a company being young is never shown as if it were a bad score.

UA · Insufficient data to vet 143 sellers Show list +

No identifiable UK trading entity yet, site unreachable or blocked to us at the time of review, or too little published to assess. Re-checked on a rolling basis. UA is "unavailable," not a grade, same reasoning as above: absence of data is not evidence of a bad seller, so it can't share a colour or scale with a genuine red "weak/closed" score. Full registry with the specific reason for each: dead and unreachable sellers.

UA Absolute BioLab

UA Accura Peptides

UA Adaptog Research

UA Aegis Peptides

UA AJ Research Labs

UA Alphex

UA AltaBioscience

UA AmpouLabs

UA Apeps Supplies

UA Apex Peptide

UA Apidem Research

UA Applied Peptides

UA Arma Peptides

UA Axiom Research Peptides

UA AxoPeptides

UA Be Better Peptides

UA Bio Supply UK

UA Bio Tech Peptides

UA Biolab Shop UK

Companies House 14487000

UA Bionexis Peptides

UA Biopro Store

UA BioSynth Peptides

UA Body Pharm UK

UA BPC157.co.uk

UA Chilton Labs

UA Clarity Peptides

Companies House 17175143

UA Clarix Peptides

UA CMSR Labs

UA Corix Research Labs

UA D&L Peptides

Companies House 16977255

UA Elevr

UA Elite Lab Peptides

UA Emergence Peptides

UA Evolve Biolab UK

UA Express Peptides

UA EZ Peptides

UA Flex Peptides

UA Futureproof Peptides

Companies House 16917118

UA Get Peptide Pens

UA GLP1Health

UA Great British Peptides

UA Grey Matter Peptides

UA Ideal Labz

UA Incline Peps

UA Index Peptides

UA JG Peptides Plus

UA KyroLabs Peptides

UA Lab77 Peptides

UA Liverpool Advanced Biosciences

UA Lotus Peptide UK

UA Lumia Lab

UA Manchester Peptides

UA Max Peptides

UA Medimax Peptides

UA Medlab Peptides

Companies House 17212658

UA Meridian Peptides

Companies House 17215941

UA MM Peptides

UA Momentum Peptides

UA My Pepbiotech

UA N9 Biotech

UA NASS Peptides

Companies House 16990556

UA Nexum Peptides

UA Nexyra Lab

UA NI Peptides

UA Nicello UK

UA Nilah Labs

UA Nova Biolabs

UA Octagon Peptides

UA OL Research

UA Omni Peptides

UA Optimal Lab

UA Optimus Labs

UA Oxford Peptide Labs

UA Pen Peptide UK

UA Pendragon Peptides

Companies House 16842079

UA Pep Matrix

UA Peptex Labs

UA Peptide Biosciences

UA Peptide Clyde

UA Peptide Prime

UA Peptide Shop

UA Peptide Shop

UA Peptide Vault

UA Peptides Distro

UA Peptides2go

UA Peptidex

UA Peptify UK

UA Peptigen Labs

UA Peptologique BioLabs

UA Peptomera

UA Peptune Labs

UA Performance Peptides UK

UA PGNA Labs

UA PGR Peptides

UA PH Labs

UA Polygon Peptides

UA Precision Chain Peptides

UA Premio Peptides

UA Premium Peptide Shop

UA Premium UK Peptides

UA Pro-Peptides

UA PS Labs

UA Pulse Peptides

UA Purest Labs

UA RC Peptides

UA Receptor Chem

Companies House 09474807

UA Regen Peptides

Companies House 16443319

UA Reta Lab UK

UA Retapeptide

UA Retatrutid UK / Synedica

UA Rhythm Peptides

UA RK Peptides

Companies House 16985172

UA SARMs Shop UK

UA SPT Peptide

UA Sterling Peptides

Companies House 17078386

UA Steroids-UK (peptides range)

UA Stratford Peptides

UA Supreme Peptides

Companies House 17293926

UA Syntech

UA The Peptide Source

UA Tide Labs UK

UA Titeris

UA Trust Peptides

UA Trusted Peptides

UA UK Peps

UA UK Peptides Online

UA UK Peptides Shop

UA UK Peptology

UA UK Sterling Peptides

UA Ultimate Peptides

UA Velonix Labs

UA Veridian Labs

UA VIA Peptides

UA Vital Peptides

Companies House 16752984

UA Vitalis Labs

UA Vitality Peptides

UA Viva Peptides

Companies House 17073380

UA Vyomax Nutrition

UA We Are Nox

UA Wolverine Peptides

UA Zenic Labs

UA Zenterex

UA Zentra Peptides

The verdict on each retailer, in one line

The same information as the table, written out as a sentence per retailer, so a verdict can be read, quoted or cited without decoding a grid. The reason given is the single most load-bearing signal behind that score.

Reading the table: a few definitions

"Needs re-confirmation" is not a seventh tier. It means a specific finding is serious enough to disclose but not yet certain enough to stand behind as a verdict. It can withhold a tier; it can never lower a score. These retailers still appear in the table above with the unresolved signal named.

"Not yet checked" is not a mark against a retailer. It means we haven't looked, not that we looked and found nothing. Any retailer can ask us to check for free at any time, evidence emailed to the address below, or commission the deeper Independent Verification process. Either way, what we actually find sets the result, in whichever direction that goes.

Full scoring detail: methodology. Funding position: how we are funded. Every material change to this index, dated: changelog. Think a finding here is wrong or out of date? Email hello@peptideclear.co.uk with evidence: corrected within 5 working days, dated correction note for material changes (editorial policy). Nobody can buy a tier change; anyone can correct one with evidence.

Separate from Testing Transparency

Responsible Practice: is this retailer clear, upfront and not misleading?

A retailer can have excellent Certificate of Analysis practice and still be unclear about who operates the business, contradict its own policies, or make claims its product pages can't support. The Testing Transparency result above measures one thing on purpose. This measures something different: whether the retailer's overall online presentation reflects a genuine effort to be clear, fair and transparent.

What we expect from a responsible brand

A brand selling a product online should aim to be clear, fair and transparent in everything it communicates. Claims should be accurate, evidence-based and presented in a way that an ordinary customer can understand, without exaggeration, ambiguity or important information being hidden.

Customers should be able to understand what the product is, what it does, what it does not do, who it is intended for, what it costs, and any material limitations or risks before making a decision.

Marketing should inform rather than manipulate. Comparisons should be fair, reviews and endorsements should be genuine and appropriately disclosed, and the overall presentation should not create an impression that the underlying facts cannot support.

Where a product is regulated, medical, health-related, safety-critical or otherwise carries a higher potential risk to the customer, we expect a correspondingly higher standard. Claims should reflect the strength of the available evidence, appropriate warnings and limitations should be prominent, and regulatory requirements should be followed. A responsible brand should take particular care not to overstate benefits, minimise risks, imply approvals or assurances that do not exist, or encourage customers to make decisions based on incomplete or misleading information.

The greater the potential harm if a customer is misled, the higher the standard of evidence, clarity, transparency and caution we expect.

Put simply: be clear about what you sell, be honest about what it can and cannot do, provide appropriate evidence for the claims you make, be upfront about material risks and limitations, and never rely on confusion, omission or exaggeration to make the sale.

How we assess brands

We assess what a brand actually publishes and makes available to customers. We do not claim to know a company's intentions. Our assessment reflects the evidence we can observe.

1. Clear and responsible

The brand appears to make a genuine and consistent effort to communicate clearly, fairly and responsibly. Important claims are appropriately qualified and supported, material risks and limitations are visible, and customers are given the information they need to make an informed decision. Where the product is regulated or higher-risk, the brand demonstrates the additional care, evidence and caution we would expect.

2. Generally responsible, with room for improvement

The brand appears to be trying to communicate responsibly and provide appropriate information, but there are gaps, weaknesses or areas where greater clarity, evidence, disclosure or caution would improve the customer experience. These issues do not currently prevent us from seeing an overall effort to act responsibly.

3. Unclear

There is not enough evidence for us to determine whether the brand is taking a consistently responsible approach. Important information may be missing, difficult to verify, inconsistently presented or insufficiently clear. This does not necessarily mean the brand is acting irresponsibly; it means we cannot confidently conclude from the available evidence that it meets the standard we would expect.

4. Material concerns

The brand's online presentation shows significant departures from what we would expect from a responsible seller, particularly given the nature or potential risk of the product. This may include unsupported or potentially misleading claims, inadequate risk information, important omissions, unverifiable evidence, inappropriate certainty, misleading presentation, or other practices that could leave customers with a materially inaccurate impression of the product.

A Material concerns assessment does not require us to determine why the brand has presented its products in this way. It reflects what we can observe and the potential effect that presentation could have on customers.

Baseline review pending

A distinct, fifth state, different from the four above: a specific signal on file for this retailer (for example, an inherited Material Concerns finding) could not be independently re-confirmed this round, usually because the site could not be re-accessed. Inability to access is treated as neither confirmation nor clearance, so the retailer stays marked as under review rather than being cleared or re-published as settled either way.

Assessed on the same evidence-and-correction basis as Testing Transparency: nobody can buy a better assessment, and a specific reason is recorded for every retailer, visible on its own page. Think an assessment is wrong? Email hello@peptideclear.co.uk with evidence.

Signals we observe

On 2026-08-14 we visited all 159 retailers and recorded four observable signals that feed into the assessment above: whether products are sold in oral or capsule form (oral dosing by design, despite a research-only framing), whether benefit claims are published next to research-only products, and whether a research-use-only disclaimer appears site-wide and inside individual product listings. These aren't scored separately or blended into Testing Transparency; they're evidence that informs the Responsible Practice judgement above.

29

sell peptides in capsule or tablet form, which is oral dosing by design

54

publish benefit claims next to products despite research-only framing

152

publish a research-use-only disclaimer somewhere on the site

123

carry that disclaimer inside individual product listings, not just the footer

Observed by loading each retailer's own site and its product pages. Where a signal could not be observed it is recorded as unknown rather than as a failure, and 134 of the 159 could not be fully observed. A seller can satisfy all four and still receive a lower Responsible Practice status for other reasons, or vice versa: these say something narrower, whether the research-only framing is real or decorative.

Beyond the free score

Want a specific retailer independently verified in depth?

The CoA tier and Responsible Practice status above are free and the same for everyone. Independent Verification is a paid tier on top: lab accreditation checks, batch traceability, corporate and regulatory history, and a right-of-reply process where we put findings to the retailer before publishing them. It never changes the free score, only adds published evidence on top of it.

See what Independent Verification covers →

Not listed here?

Request a free first audit

We email you the verdict link when the audit is complete.

What are you vetting?

We commit to an editorial verdict within 72 hours. PeptideClear is independent. We do not guarantee a specific outcome. See our methodology and privacy policy.

Named UK manufacturers we reference

Real UK peptide manufacturing happens under MHRA inspection at named facilities. The three we cite across PeptideClear editorial as the reference point for "named lab":

  • · Almac Group (Craigavon, Northern Ireland): MHRA-inspected, 600+ pharma customers, named launches Agios Pyrukynd, Sanofi Tzield, PTC Upstaza.
  • · Sterling Pharma Solutions (Cramlington, Northumberland): UK CDMO, 25+ years peptide synthesis, 40-amino-acid capability.
  • · Biosynth Pepceuticals (Leicester): MHRA-approved API manufacturer, 8 cGMP labs, multi-kilogram commercial supply.

None sells to consumers. They are the contrast point for what real UK peptide manufacturing looks like. Read the full explainer.

Why this matters

Every UK research peptide retailer claims purity. A small minority publish per-batch Certificates of Analysis from a named third-party laboratory. That is one of the few objective signals a buyer can verify independently before buying.

This page exists because no UK retailer can honestly compare its own CoA practice against the rest of the segment. We do that here, in one place, re-checked on a rolling basis.

Research peptide encyclopaedia entries

CoA quality matters most when a compound has a substantial research literature. These are the compounds with the most-cited UK retailer stock and preclinical literature.

BPC-157

Most discussed research peptide. Animal data only. Encyclopedia entry.

TB-500

Thymosin beta-4 fragment. Preclinical connective tissue literature.

GHK-Cu

Copper-binding tripeptide. In-vitro and preclinical literature. Also in cosmetics.

Ipamorelin

Growth hormone secretagogue. Novo Nordisk Phase II, discontinued.

Sermorelin

GHRH analogue. Geref withdrawn US 2008. No UK marketing authorisation.

MOTS-c

Mitochondrial-derived peptide. Nature Communications 2020. Mouse data.

Full research peptides encyclopaedia

Machine-readable access

The data behind this index is published as a read-only Data API and MCP server for developers and AI agents: a JSON endpoint listing every seller with its CoA verification signals, plus an aggregate CoA snapshot. Factual vendor and verification data only, not medical advice and not a recommendation to use any substance. Released under CC BY 4.0.

Cite this index

To reference the current, live PeptideClear Trust Index, please credit PeptideClear and link to this page:

Source: PeptideClear, PeptideClear Trust Index, https://peptideclear.co.uk/coa-trust-index/ (accessed 2026-08-31).

A separate, dated historical snapshot of this dataset (its earlier "CoA Trust Index" form, before the current three-pillar Testing Transparency / Business Transparency / Responsible Practice model) is permanently archived with its own DOI. Cite that snapshot specifically, not the current live page, if you need the historical version:

Source: PeptideClear, UK Research Peptide Retailer CoA Trust Index, https://peptideclear.co.uk/coa-trust-index/ (accessed 14 July 2026). DOI: https://doi.org/10.5281/zenodo.21354701

Historical snapshot DOI: 10.5281/zenodo.21354701. Download the historical observable-signals snapshot: CoA Trust Index, July 2026 edition (CSV). For the current live data, use the public API.

Think we've got this wrong? Every score is mechanical, but the research behind it is done by people, and people miss things. Spot an error, an out-of-date signal, or a gap? Tell us: it's worked as a correction, not a complaint. Nobody can pay to change a tier, and material corrections are made within 5 working days with a dated note on the affected retailer's page: full process in our editorial policy.

Email hello@peptideclear.co.uk

Our live data trackers

PeptideClear maintains these as refreshable datasets rather than one-off articles. Each carries its own source, methodology and last-updated date.

Live data tracker

UK GLP-1 prescribing tracker →

Monthly NHS England primary-care prescribing volumes for GLP-1 medications, rebuilt as each new month publishes. Dated chart, month-by-month table, full methodology.

Source: NHSBSA English Prescribing Dataset

Live data tracker

UK peptide clinical-trials tracker →

Registered interventional trials for every research peptide we track, by phase and recruitment status, linking through to each compound record.

Source: ClinicalTrials.gov and ISRCTN

Live data tracker

MHRA enforcement and safety tracker →

Every MHRA safety alert, enforcement action and drug safety update relevant to weight-loss medicines and peptides, dated and linked to the gov.uk original.

Source: gov.uk / MHRA

Live data tracker

UK peptide regulation: monthly overview →

A monthly record combining the MHRA feed with a web-search pass for ASA rulings, Trading Standards action and named-retailer enforcement, each item linked to its source.

Source: gov.uk / MHRA / ASA / Trading Standards

Live data tracker

UK research-peptide price index →

Headline price per milligram across the UK research-peptide retailers we score, so a price can be read against the market rather than in isolation.

Source: PeptideClear retailer survey

Live data tracker

Data API and MCP server →

Read-only, no-auth REST API and MCP server over the full scored dataset: corporate identity, regulatory status, CoA verification signals. CC BY 4.0.

Source: PeptideClear, live data

Check it yourself: the official sources

PeptideClear is editorial. Nothing here replaces the regulator, and you should not take our word for any of it. These are the official UK destinations where the underlying position is published, free to read and open to anyone.

  • legislation.gov.uk

    Human Medicines Regulations 2012

    The legislation that defines what counts as a medicine in the UK, and what constitutes illegal supply. A product marketed with medicinal claims is regulated as a medicine regardless of how it is labelled.

  • World Anti-Doping Agency

    WADA Prohibited List

    The annually updated list of substances and methods banned in sport. Many research peptides sit under S0 or S2. UK Anti-Doping enforces it on tested athletes.

  • MHRA

    Report a fake or illegally supplied medicine

    The MHRA route for reporting a website or seller supplying medicines illegally, and for reporting a product you believe is counterfeit.

  • MHRA

    Yellow Card scheme

    Report a suspected side effect, a defective medicine, or a fake or counterfeit product. Anyone can report, including patients. Reports feed the MHRA safety monitoring system.

  • MHRA

    MHRA Products portal

    The Summary of Product Characteristics and Patient Information Leaflet for every medicine licensed in the UK. This is the authoritative document for what a medicine is licensed to do.

Popular on PeptideClear

Research peptides

BPC-157 (UK)

Collagen

Best UK collagen brands 2026

GLP-1

UK GLP-1 clinics compared

Methodology

Trust Index

Vetting

UK retailer directory

Related on PeptideClear

Reviewed by Oliver Mackman, editorial director · last reviewed 2026-08-24T12:00:00.000Z
Trust, Legal and Governance

PeptideClear is a trading name of Best Business Loans Ltd, registered in England and Wales (company number 16833937). PeptideClear's editorial and publishing operation is delivered by Best Business Loans Ltd.

Legal and Registration

Registered in England and Wales. Company number 16833937. D‑U‑N‑S 234324824. ICO registered, reference ZC151816 (certificate, verify). Registered supplier on the UK Government's Find a Tender Service (FTS). Details publicly available via Companies House and OpenCorporates.

Standards and Governance

Operates under UK data protection and consumer standards, including UK GDPR.

Domain Continuity

Primary domain peptideclear.co.uk. Business ownership, entity and services remain unchanged. Reviewed quarterly.