I started by making a spreadsheet with the entry requirements, PBL/Lectures, likelihood of getting in, how they use UKCAT ect. I got a C in my 4th AS which really limited my choices as most places want at least a B. I deleted all the rows in which unis wanted a B or higher and then filled in the details of likelihood of getting in deleteing the least likely eg Durham is notorious for having a high UKCAT requirement and then looked at the details such as PBL as a last resort to narrow down which ones to apply for. Although, tbh i did not have many choices left and applied to the ones I thought I had the best chance. There are certain places such as St George's where I would have been guaranteed an interview but i really disliked the area so I decided I'd rather take a gap year than spend 6 years in an area which I didn't like. You need to realistically look at which place would want you; not which place you want. Using this play to your strengths in where to apply. I also deleted all the BMAT unis before I even started because I knew that after the UKCAT I did not want to go through a similar experience again when you also have to focus on your studies and writing your PS