Bill received his BSc and PhD in Chemistry from University College, Cardiff. He was trained in biomedical mass spectrometry at Karolinska Institutet in Stockholm. Bill has held academic positions in King'ston Jamaica, Stockholm Sweden and London. In 2007 Bill moved to Swansea University to take the Chair of Mass Spectrometry. Bill’s research interests are in cholesterol biosynthesis and metabolism, particularly pathways of bile acid biosynthesis. Bill works closely with long term collaborator Professor Yuqin Wang, and the focus of their group’s work is on the involvement of oxysterols in biology, particularly in rare diseases, neurodegenerative disease and the immune system. When living in the Caribbean, Bill played international rugby for Jamaica.