To become a registered occupational therapist you will need to have a degree, or have completed a postgraduate course, in occupational therapy that is approved by the Health and Care Professions Council (HCPC).See the HCPC website for approved courses and course providers.1  Health and Care Professions Council.o become a registered occupational therapist you will need to have a degree, or have completed a postgraduate course, in occupational therapy that is approved by the Health and Care Professions Council (HCPC). See the HCPC website for approved courses and course providers. 1  Health and Care Professions Council.