Anthony (Tony) Segal MD PhD FRS FMedSci (born 24 February 1944) is a British physician/scientist. Education He was educated at the University of Cape Town (MB ChB, MD) and University of London (MSc, DSc, PhD). Fellow of: UCL, Royal College of Physicians, The College of Medicine of South Africa Career and research Tony Segal was born in Johannesburg, South Africa, and grew up in Bulawayo, in a Jewish family, in what was then Southern Rhodesia (now Zimbabwe). He was schooled locally and then studied Medicine at the University of Cape Town and Groote Schuur Hospital, where he undertook house-physician and house-surgeon positions. After six months as a medical registrar in the cardiothoracic department of Wentworth Hospital in Durban he moved to London where he attended the Royal College of Surgeons and obtained his primary fellowship. He then worked in the Accident and Emergency department at the Hammersmith Hospital, followed by six months as senior house officer to the rheumatologist Eric Bywaters. Segal then moved to the MRC Clinical Research Centre as registrar in Gastroenterology, during which time he studied Biochemistry at evening classes at Chelsea College of Science and Technology. Over the next decade he specialised as a gastroenterologist and held various positions at Northwick Park Hospital and Hammersmith Hospital before moving to University College London as a Wellcome Trust Senior Clinical Fellow. In 1986 he was appointed to the Charles Dent Chair of Medicine and Head of the Centre for Molecular Medicine, a position that he held until April 2020. In May 2020 he was a co-founder and appointed as CEO, of Imhotex, a company formed for the development of drugs to treat Crohn's disease. Initially a clinical gastroenterologist, his interest in immunity resulted in him starting a clinical service for immunodeficiency. He served on the Council of the European Society for Clinical Investigation for four years, and in 1984 he started the Phagocyte Workshop of that society, which is running to this day. He was a member of three of the finding panels of the Wellcome Trust, chairing the International Interest group. In 1998 he was a founding Fellow of the Academy of Medical Sciences and was elected as a Fellow of the Royal Society, and has served on and chaired, several Royal Society committees. In 2014 he was awarded the UCL Prize Lecture in Clinical Science Prize. His recent work is concerned with Crohn's disease and the