I would personally choose Nottingham - for a few reasons. Don't be put off by people saying you don't get help with finding placements and stuff because that happens with most things most of the time at university. You're an adult now (though i deny this myself quite frequently) and they want you to take control of your learning and what you do outside of the degree.
I know Notts has a very good and active Pharmacy Student Association which organises a range of socials and such like. Also, they have pretty good links with the British Pharmaceutical Students' Association (representative and supporting body for pharmacy students), they organised a coach to take a load of students to the last conference i went to. Their association also has fairly good links with the local pharmacy branch. These branches hold evening events where you get to learn things you won't on the degree, as well as meet loads of qualified pharmacists.
Finally, you get the chance to go to Malasia! zOMG!
But on the other hand Cardiff is a beautiful city and full of welsh people, which is good if you like the accent! hehe.