Why Do You Want To Study Medicine?

Scientific Endeavours
These could include research work in a lab, giving a presentation in school on a particular disease, starting a campaign to raise donations for a particular disease, reading a very interesting book. They need not be astounding or ground-breaking achievements, but should be extracurricular to prove that you are actively engaging with the subject area by opening your horizons beyond your prescribed syllabus.
This will help distinguish why you chose to study medicine and not nursing.
 
Volunteer Work
If you do talk about scientific endeavours, it is important to balance this out with something more humanitarian to show why you chose to study medicine as opposed to biomedical sciences. You should also talk about how volunteering made you feel. While the volunteer work need not strictly be in a medical setting, such as volunteering at a Cancer Research or British Heart Foundation charity shop, the more directly related it is to medicine the more apparent your interest would be.
 
Recent News Stories
Few candidates discuss recent news stories, particular ones to do with government policy, so this could help further enhance your application. It could include recent measles outbreaks in the US, the U=U (undetected = untransmittable) movement to get patients with HIV who have an undetectable viral load to be classified as HIV free or the humanitarian crises in Yemen. Be sure to show that you read further into the medical aspects of the news article and that this deepened your interest in medicine.