Relocating to the UK as a doctor

Medical professionals relocating to practice in other countries is not an unusual occurrence, but finding relevant, helpful information is. If you are a keen medical student or doctor who wants to broaden your horizons, this guide will serve as a central source of information regarding the necessary requirements for relocating as a doctor to practice in the United Kingdom.
 
The guide provides information on the following:
Healthcare system and structure
Eligibility and exams
Postgraduate training and finding a job
Immigration and visas
Lifestyle
Checklist of the things you need to get done before relocating (with approximate time periods)
 
UPDATE (2022):
Example entry routes and standard training of doctors in the country
Social media account recommendations (where available)
AND overall top tips at the end of the guide!