American College of Physicians and of the Irish College of Physicians. He was a founder member of European Association for the Study of the Liver (EASL), serving as Chairman in 1983 and as Honorary President in 2008. He was appointed CBE for services to medicine in 1993. He was the author of approximately 3000 papers, chapters and reviews published in learned journals and books. In 2010 he was quoted as the most cited researcher of the year in his specialty by ISI Thomson Scientific. Professor Williams practiced at King's College Hospital and in the Harley Street Diagnostic Clinic until he died in 2020. Outside medicine, his interests were opera, piano music and sport. He enjoyed tennis and yacht racing and was a member of the Royal Yacht Squadron and Royal Ocean Racing Club. He died on 26 July 2020 at the age of 88. References External links http://www.rogerwilliamsliverclinic.com British hepatologists 21st-century British medical doctors Commanders of the Order of the British Empire 1931 births 2020 deaths Fellows of King's College London