Lead oncologist at the Department of Paediatric Haematology, Oncology and Palliative Care, NHS Cambridge University Trust. He is a childhood cancer specialist working at Addenbrooke’s Hospital, providing service to children in the East of England. He is an authority on children’s leukaemia and is responsible, as Cancer Specialist Lead, for the delivery of clinical cancer trials for children and young people in England. He is a member of the National Cancer Research Institute Lymphoma Clinical Studies Group and chairs its paediatric Non-Hodgkin Lymphoma subgroup.