If you will struggle to get a B in a level chemistry, are you sure the course is the right one for you?
There are a few new pharmacy schools taking students on from 2025, and new schools often have slightly lower requirements in their first year of running, and may enter clearing. But even at these schools getting onto the standard course with BBC will be unlikely.
Doing the initial foundation year really might be your best option. Or apply for pharmacology at a Uni where you can enter year 1 pharmacy subject to grades achieved in year 1 pharmacology?