Hi,
Congrats on getting an interview offer.
The best way to prepare for the interview is what the others have said above. Be yourself at the interview and try to relax as best as possible.
I would say knowing the 9 Pharmacy professional standards and maybe having some examples of how you have demonstrated this so far. Ensure you understand how to do some basic pharmaceutical calculations - similar to the chemistry ones.
Best of luck with your interview and don't spend too much time overthinking it!
University of Bath