Your GCSE's, whilst in the range, are on the weak side for Oxford and certainly won't stand out, so something else will need to. There is literally nothing you have written that would encourage me to consider you as a serious applicant for any med school, even allowing for Oxford's relative disinterest in the softer skills ("we train scientists, not doctors").
Have you followed the stalking pages for the last few cycles? I have to admit I was put off from applying with much better GCSE's than yours because the BMAT truly is a bitch. Two trial runs, two wildly divergent scores. Oxford is definitely doable if you can outshine the 100%ers in an academic interview and ace the BMAT. IF. But I think you would fail at getting an interview for medicine anywhere else with your current attitude. You are gambling everything on a very long shot, for less than impressive reasons, and actively sabotaging the alternatives. It might come off, but can you see how to any admissions tutor it appears a very immature attitude? The other BMAT unis - esp Leeds - can be very PS heavy so they may not be a workable fallback to an unsuccessful application to Oxford.