Sorry this is so out dated - there are so many new routes into medicine it is not all about grades. In my year we had nurses, policemen, dieticians, personal trainers, ex soldiers, bankers, teachers, midwives , lawyers, actors, various second degree students- the geriatrics as we called them came from all walks of life and all social classes, as did th 18/19yr olds fresh from school and a gap year, 40% were to use a term i hate BAME - people of indian, pakistani, nigerian, jamaican, zimbabwean, chines, malay, burmese, jewish, lebanese, iranian etc descent
Hot all had straight ~As and there was not doubt that some had to work harder than others. There does need to be an element of academic ability as the volume of information to process is large.
I entered medical school in 1988