George Vassiliou graduated from the Royal London Hospital Medical College in 1994, having obtained an intercalated BSc in Pharmacology with Basic Medical Sciences in 1991. He carried out his basic medical training in London and Cambridge and became a member of the Royal College of Physicians in 1997. He went on to train in Haematology at the Hammersmith and Great Ormond Street Hospitals, and received his PhD from the University of Cambridge in 2005. After completing his Haematology training in Cambridge, he became a Member of the Royal College of Pathologists in 2005 and from 2006-11 carried out a postdoctoral period in Allan Bradley’s Laboratory at the Wellcome Trust Sanger Institute, funded by a Cancer Research UK Clinician Scientist Fellowship. In 2011 he won a Wellcome Trust Senior Fellowship in Clinical Science and became a member of Faculty and Group Leader at the Sanger Institute. He joined the Faculty of the Cambridge Stem Cell Institute in 2015. Additionally, he has been an honorary Consultant Haematologist at Cambridge University Hospitals since 2006.