Complex sentence: There are many distinguished alumni of the Cardiff University School of Medicine which includes Professor Sir Keith Peters, who is Regius Professor of Physic at the University of Cambridge, where he is also the Head of the School of Clinical Medicine.
Split into simpler sentences: There are many distinguished alumni of the Cardiff University School of Medicine. These include Professor Sir Keith Peters, who is Regius Professor of Physics at the University of Cambridge, where he is also the Head of the School of Clinical Medicine.