The Geography course at Bangor was in clearing this year, as were 39 of their other courses. So there is always a chance that if you miss your predicted grades you'll get in there anyway.
Bangor is one of those unis that makes quite a few unconditional offers. There is a possibility you would get one with your predicted grades.
If you prefer Royal Holloway then go for it. Conditional offers last year were ABB so likely that you will get an offer.
Alternatively, apply for RH, Exeter, Bristol & Southampton now and see what offers you get. You can then add a 5th uni later.