Doctors must be registered with the General Medical Council (GMC) and have a licence to practice. If your medical report was written before 16 November 2009, they only need to be registered with the GMC.
Psychologists must be registered with the Health and Care Professions Council.
You can use the list to find a medical practitioner specialising in gender dysphoria. This is not a full list and you do not have to use someone from this list.