In 1984, Nurse joined the Imperial Cancer Research Fund (ICRF, now Cancer Research UK). He left in 1988 to chair the department of microbiology at the University of Oxford. He then returned to the ICRF as Director of Research in 1993, and in 1996 was named Director General of the ICRF, which became Cancer Research UK in 2002. In 2003, he became president of Rockefeller University in New York City where he continued work on the cell cycle of fission yeast. In 2011 Nurse became the first Director and Chief Executive of the UK Centre for Medical Research and Innovation, now the Francis Crick Institute.