National GUM Clinics The GMFA website provides up-to-date detailed information about London-based GUM clinics only. If you would like more information about nation-wide services, please click here.If you're unsure if you need a GU clinic or don't know where to go, take our short survey to assess your sexual health needs. LAUNCH SURVEY Useful links: BACK TO GUM CLINICS LONDON PREVENTION & SUPPORT SERVICES STIS