Hackney carriage or private hire (Taxi) Drivers must obtain and submit a Medical questionnaire completed by a medical practitioner (usually every 3 years).
Your local authority (council) will provide you with the medical form or you can find it on their website (usually) . It will be completed by the doctor.
Prior booking, you will need to check with the local authority (council) that any registered doctor can perform the Medical and not just your own GP. Once booked, medicals cannot be cancelled.