Black & White Peptides Ltd. Registered in England & Wales, company number 16876162.
UK research peptide supplier · Janoshik HPLC verified · 44 compounds
Research-grade peptides, dispatched same day from the UK.
Every compound available as a lyophilised vial or pre-filled injector pen. Independent third-party HPLC verification by Janoshik Analytical on every batch. Discreet UK packaging. Real human reply on WhatsApp before you order.
From £12 / vial · Same-day dispatch before 4:30pm UK weekdays
Every batch independently HPLC-verified by Janoshik Analytical
99%+ purity · Third-party Czech lab · Verification key on every COA · Sample reports public
How ordering works
Four steps. No card payment, no account needed.
Most orders go from "I'd like to order" to "your parcel is dispatched" in under 90 minutes during UK working hours.
Browse the catalogue
Choose your compound, select vial or pen format, pick your size, and decide whether to include BAC water. Your total updates instantly with our live cost calculator on every page.
Message us with your selection
Reach us instantly on WhatsApp or email. Every order button pre-fills your message for a faster checkout, and a real team member usually responds within minutes during UK working hours.
Pay by UK bank transfer & PayPal
Once your stock is confirmed, we’ll send you our bank payment details privately. UK Faster Payments usually clears within seconds, Same with PayPal.
Same-day dispatch
Place your order before 4:30pm on a UK weekday for same-day dispatch via Royal Mail Tracked 24, shipped securely in discreet plain packaging.
Most-cited compounds
What researchers order most.
Choose from six of our best-selling compounds, all also offered in pen format for an additional £15 over the vial price.
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GHK-Cu.
£75.00 Select options This product has multiple variants. The options may be chosen on the product page -
Retatrutide.
Price range: £80.00 through £160.00 Select options This product has multiple variants. The options may be chosen on the product page -
Tirzepatide
Price range: £85.00 through £205.00 Select options This product has multiple variants. The options may be chosen on the product page -
KLOW Blend.
£95.00 Select options This product has multiple variants. The options may be chosen on the product page -
BPC-157.
£55.00 Select options This product has multiple variants. The options may be chosen on the product page -
Semaglutide.
Price range: £65.00 through £130.00 Select options This product has multiple variants. The options may be chosen on the product page
Why Black & White Peptides
Verified. Traceable. Dispatched same day.
UK-registered supplier of research-grade peptides and small-molecule reference compounds. Stock held in London, Janoshik HPLC tested, packaged discreetly, dispatched same day on UK weekday orders before 4:30pm.
UK-registered, UK-stocked
Companies House 16876162. Stock in London. No customs lottery, no overseas drop-shipping.
Janoshik HPLC tested
Every batch independently tested by an unaffiliated Czech specialist lab. 99%+ purity, verification key on every COA.
Same-day dispatch
UK weekday orders before 2pm ship same-day via Royal Mail Tracked 24. Discreet plain box, no branding outside.
Real human reply
WhatsApp or email. Real human reply within minutes during UK working hours. No chatbots, no offshore call centre.
New here? Start with the beginner’s guide or run us through the 12-point supplier-checklist. Already know what you need? Browse the full catalogue ›
Research areas
Browse by what you study.
Metabolic research
GLP-1, GIP, glucagon agonists, amylin analogues, AMPK activators, mitochondrial peptides.
Regenerative research
Tissue-repair peptides, dermal-research compounds, immune modulators, myostatin pathway.
Growth hormone & GHRH
GHRH analogues, GHS / ghrelin mimetics, IGF analogues, recombinant hGH, gonadotropins.
Neuropeptide research
Cognitive / nootropic, anxiolytic, sleep architecture, melanocortin, HPG / HPA axis.
From the journal
Read before you order.
Honest writing about the UK research-peptide market. Spotting fakes, reading lab reports, dosing literature.
Independent reviews
Verified UK researchers.
4.7 out of 5 · 19 verified reviews on Trustpilot
Frequently asked questions.
Everything researchers usually message us about, before they place a first order.
Are research peptides legal in the UK?
Yes, for the compounds we supply. Research-grade peptides for in-vitro and laboratory use are legal to buy and possess in the UK, provided they are not controlled substances under the Misuse of Drugs Act 1971 and are supplied as research reagents rather than medicines. None of our compounds are controlled substances. Read the full UK legality guide ›
Vial or pen - what's the difference?
The compound inside is identical: same Janoshik-verified batch, same purity. The vial is a clear glass vial of lyophilised powder you reconstitute yourself with bacteriostatic water. The pen is the same compound pre-loaded into a research injector pen with a dose dial, ready to use. The pen costs £15 more than the equivalent vial (the refill-service charge for filling and assembling).
What happens when I run out?
If you ordered a vial: just order another vial at the normal vial price. Add bacteriostatic water (£6) only if you’ve also run low on it.
If you ordered a pen: order a refill cartridge at vial price + £15. The cartridge slots straight into your pen, so you don’t need to buy a new pen device every time. Exact prices on every product page.
Are your products tested?
Yes – every batch. Independently HPLC-verified by Janoshik Analytical, a Czech specialist peptide-analysis lab unaffiliated with us. 99%+ purity, verification key on every COA. How to read a Janoshik report ›
How is shipping handled?
Same-day dispatch on UK weekday orders before 4:30pm via Royal Mail Tracked 24 (£7) or Special Delivery before 11am (£14.95). Discreet plain outer with no branding visible from outside. Tracking number sent on WhatsApp / email as soon as the parcel ships.
Is this for human use?
No. All compounds are supplied strictly as research-grade reference reagents for in-vitro laboratory research only, the same legal frame as Sigma-Aldrich, Cayman Chemical or Tocris. We do not provide dosing or administration guidance for humans. Beginner’s guide ›