Tim Hunt was, until his retirement in 2010, a ‘principal scientist’ (note, not THE principal scientist) at Cancer Research UK, Clare Hall Laboratories, in South Mimms, Hertfordshire. Dr Hunt was born in 1943 and grew up in Oxford, moving to Cambridge to read Natural Sciences in 1961. He obtained his Ph.D. from the Department of Biochemistry in Cambridge in 1968. He spent almost 30 years in Cambridge, working in the Department of Biochemistry on the control of protein synthesis and the cell cycle, but with spells in the USA; he was a postdoctoral Fellow at the Albert Einstein College of Medicine in 1968-70 and spent summers at the Marine Biological Laboratory, Woods Hole from 1977 until 1985, teaching laboratory courses and doing research. In 1982, he discovered cyclins, which turned out to be components of “Key Regulator(s) of the Cell Cycle” This led to a share of the Nobel Prize in Physiology or Medicine in 2001, together with Lee Hartwell and Paul Nurse. Tim Hunt was chairman of the council of EMBO (European Molecular Biology Organisation) from 2006 - 2010. From 2011 to 2015, he was a member of the ERC (European Research Council) Scientific Council.