Along with having amazing A-level grades most medical schools look for work experience in any caring and health environments. This mainly consists of care homes, hospitals and hospices. They want to be able to see that you know what you are getting yourself into and that you are able to talk and interact with patients more than anything. This is why it is extremely important to get relatable and valuable work experience before you submit your UCAS application.
A great website that was extremely helpful is http://www.studentladder.co.uk/Medicine-Dentistry-Vets/medicine-dentistry-vets.html. It showed me what type of workplace would be appreciated by medical schools.