Well done on the A levels!! I'm hoping to do the same at some point, time depending on funding availability. I don't see why you would have any problem at all applying, as long as you get at least a low 2.1. But higher the better.
Try and get some hands on health care or hospital experience, as I imagine that would help.
For me, the funding is the biggest concern, which you should keep an eye on if possible. We may end up having to go into undergraduate courses (presumably with entry requirements changed for graduates in line with current GEM, one would hope).