Dr James Nicholson is a specialist in children's cancer and manages all types of solid tumours as well as working closely with haematology colleagues in the management of children with leukaemia. His main research interests are in germ cell tumours and he chairs the national childrens germ cell tumour NCRI subgroup, working closely with European and American colleagues in collaborative research. He is chair elect of the Children's Cancer and Leukaemia Group, the national professional body for professionals working in the field of children's cancer.