There is the Photo Parlour, Nottingham. They have various courses on black and white. I've never been on one, but then I have all my own stuff.
I'm not sure how much a course will help you though.
As CS1 said, you need to take a scientific approach, and keep making little changes in a repeatable way until you find results you like. The classic newbie question is "Which is better, film x or film y?", for which the only sensible answer is "it depends....". The results are subjective. My favourite film is Ilford XP2. I can get a "look" from it that I can't find anywhere else. Someone else might hate XP2, and love Tri-X, for example. We're both right!
It's a long path, but ultimately the most rewarding one. And we can help you.