Griff is a Welsh Medical Graduate (1999) and is a GP in a large Swansea practice. Prior to his substantive university appointment he was an Honorary Clinical Lecturer and regular tutor of the Swansea medical students. He is the Course Director for the MSc Clinical Medicine.
His interests are diabetic and metabolic medicine and he is a keen teacher of medical students in the clinical setting in his practice. He is a Member of the Royal College of General Practitioners.