Wise and Foolish is a great record. Rich Man too and Salvation. Peel Sessions are well worth getting - a best of both worlds live in the studio set in many respects. I love Counter Eurovision but but the audio quality is incredibly boomy. Like the live Burning Spear record. That one is all room like those early Stones live recordings!
Mad Professor was based in Tulse Hill or somewhere like that though I think he was born in the West Indies. I think you could count him alongside say Jah Shaka as a British artist