Dr Sujith Samarasinghe is a consultant paediatric haematologist at Great Ormond Street Hospital, London.  He completed his medical training at Imperial School of Medicine, London in 1998. He did his paediatric haematology training at Great Ormond Street Hospital and University College Hospital, London. He was awarded a PhD in 2010 from University College London in the field of immunotherapy for leukaemia.

In 2011, Sujith was appointed as a consultant haematologist in Newcastle but returned to Great Ormond Street Hospital in 2014. His areas of expertise include childhood leukaemia and aplastic anaemia. He is the national lead for childhood aplastic anaemia and supportive care, and a co-investigator on two CAR T-cell studies in childhood leukaemia.