Professor Stephen MacKinnon is one of London's leading haematologists. He leads the bone marrow and stem cell program at University College London and specialises in leukaemia, lymphoma, myeloma and stem cell transplantation. He has trained in both the UK and USA. In recent years he has developed an interest in novel conditioning regimens and his current research interests include adoptive immunotherapy and immune reconstitution following allogeneic stem cell transplantation. The program has had world class transplant outcomes for patients with leukaemia and lymphoma. He has been widely published in numerous peer-reviewed journals.