How We Verify Providers
What we check before a pharmacy appears in our comparison — and how you can verify one yourself.
We only list pharmacies and clinics whose registration we have checked directly against the official regulator register — the General Pharmaceutical Council (GPhC) for England, Scotland and Wales, and the Pharmaceutical Society of Northern Ireland (PSNI) for Northern Ireland. That check tells you the pharmacy was registered on the day we looked. It is not an endorsement, and it does not test the quality of the consultation, the prescriber, or the checkout flow — those are things you should check yourself before you buy, and the section below shows you how.
1. GPhC / PSNI registry check
Every pharmacy claiming to dispense prescription weight loss medication must hold an active registration with the GPhC (Great Britain) or the PSNI (Northern Ireland). We look up each provider’s registration number directly on the official register and record whether it is current, not lapsed, suspended, or pending review. A listing is not created until this number has been checked against the live register, not just taken from the provider’s own website. Each check is a dated, immutable record — a new check is a new event, never an edit to the old one.
2. How to verify a pharmacy yourself
You should always check a pharmacy’s credentials yourself before you buy, not just rely on our listing. Here is what to look for:
- Look for the voluntary internet pharmacy logo. It contains the GPhC registration number and links through to the GPhC website.
- Check the registration number yourself. Click the logo, or search the number directly on the GPhC or PSNI register — do not take a provider’s word for it.
- Look for a physical UK address. Legitimate registered pharmacies list one.
- Be wary of a missing consultation. Weight-loss injections are prescription-only. A site that lets you add one to a cart with no ID check or medical questionnaire is not operating safely.
What we do not check
We are precise about the limits of our own checking, because overstating it would be worse than not checking at all. We do not verify individual prescribers against the GMC or the GPhC prescriber register. We do not test a provider’s consultation or checkout flow. We do not run our own anti-spoofing or domain-matching checks. None of that is automated or manually audited on our side today. A GPhC or PSNI registration confirms the pharmacy is registered — it says nothing about the specific clinician you are assigned or the quality of the consultation you receive.
If a registration changes
Verification is not a one-off event. When we re-check a provider’s GPhC or PSNI registration and find it suspended, lapsed, or restricted, that provider is suspended or retired from PenCompare — never silently edited or deleted, always a new dated record. This applies to registration status only; it is not a claim about ongoing clinical quality, which we do not monitor.
Ready to see providers with a checked GPhC or PSNI registration?