Dr Sanjay Tewari completed his post-graduate training in paediatrics in India. 

After finishing his CCT in paediatrics, he did his haematology training in London, working at Royal Marsden and Great Ormond Street Hospital.

Dr Tewari was appointed as Paediatric Haematologist at The Royal Marsden in 2018. His special interests are bone marrow failure syndromes, myeloid neoplasms and chronic myeloid leukaemia.  He is a member of CML and aplastic anaemia working groups as well as the European Neuroblastoma Morphology working group. He is also the lead for paediatric leukaemias and the lead for paediatric haematological malignancy diagnostic services at The Royal Marsden.