Barbara J. Bain is a renowned haematologist with over 50 years of experience in clinical and laboratory haematology. She is Professor Emerita of Diagnostic Haematology at Imperial College London and Honorary Consultant Haematologist at St Mary's Hospital, London. She has contributed to the WHO Classification of Tumours of Haemopoietic and Lymphoid Tissues and has authored numerous influential publications in the field.

Mike Leach is a Consultant Haematologist at the Beatson West of Scotland Cancer Centre and Gartnavel General Hospital. With a strong focus on diagnostic haematopathology, he has extensive expertise in blood film morphology and haematological disease. As an Honorary Senior Lecturer, he is actively involved in the education and training of future haematologists and laboratory scientists.