Sir William Stanley Peart FRS(b. 31 March 1922[1]) is a British doctor. He was educated at Bradford Grammar School and St Mary's Hospital Medical School (now part of Imperial College School of Medicine). [2] He was awarded the Buchanan Medal of the Royal Society in 2000 "for his contribution to the foundations of understanding of the renin angiotensin system in particular through his seminal work on the isolation and determination of the structure of angiotensin, purification of renin, and subsequent studies on the control of renin release".[3]