Professor Rees is a Consultant Paediatric Haematologist with a specialist interest in sickle cell disease. Prof Rees trained at Cambridge University and St Thomas’s Hospital Medical School University of London, then worked at Sheffield, Oxford and London Hospitals before being appointed at King’s College Hospital.

Prof Rees has six years full-time research experience in laboratory and clinical aspects of inherited anaemias and has written more than 70 research papers in peer-reviewed journals. He is a member of the Steering Group of the NHS Sickle Cell and Thalassaemia Screening Committee, a medical adviser to the Sickle Cell Society and is also on the editorial board of the British Journal of Haematology.