If you are an expat, student, or tourist in the UK, you might assume you need to navigate a massive bureaucratic maze to get an NHS Number before you can access healthcare. For general medicine, that is true. For sexual health, it is completely false.

🛡️ The Golden Exemption: Sexual Health is Free for All

By law, sexual health services in the UK are exempt from NHS residency and immigration checks.

You do not need an NHS Number to use a GUM (Sexual Health) Clinic. Whether you are an undocumented immigrant, a tourist from outside the EU, or an expat who just arrived yesterday, testing, STI treatment, HIV care, PrEP, and emergency PEP are 100% free of charge. Clinics will not ask for your passport, they will not ask for your visa status, and they will not charge you.

🇪🇺 The EHIC / GHIC

If you are visiting from the EU, you have an EHIC (European Health Insurance Card).

  • For A&E (PEP): If you need emergency PEP and go to a hospital A&E, show your EHIC if you have it. However, even if you don't have it, PEP is classified as emergency sexual healthcare and will not be billed to you.
  • For GUM Clinics: They will not even ask for your EHIC, because the service is universally free.

🏥 Getting an NHS Number (For General Health)

While you don't need an NHS Number for the sexual health clinic, having one makes interacting with the broader UK system (and the postal testing system) much smoother.

  1. Register with a GP: To get an NHS Number, you must register with a local General Practitioner (GP). You can do this online or by walking into a local surgery and filling out a GMS1 form.
  2. No Proof of Address Required: NHS guidelines explicitly state that you do not need proof of address or ID to register with a GP, though some poorly trained receptionists may still ask for it.
  3. The Firewall: Once you have your NHS Number, you can give it to the GUM clinic. Do not worry: Giving the GUM clinic your NHS Number does not break the firewall. Your sexual health records will still be kept completely separate from your GP records.

Postal Testing (SHL / SH:24): If you want to use the free postal testing kits sent to your home, the system will ask for your NHS Number. If you don't have one yet, you can usually bypass that field, but the system works much faster if you provide it.

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