Professor Ian O. Ellis has been involved in the practice of pathology for over thirty years and has an international reputation in clinical and translational research in breast disease, particularly classification of breast cancer and evaluation of prognostic factors. Author of over 600 peer reviewed scientific publications, chapters in medical textbooks and specialist textbooks in pathology and an experienced lecturer being a founder member of the faculty of the Nottingham International Breast Education Centre. He is a Fellow and a past Specialty Advisor of The Royal College of Pathologists, past President of the Pathological Socity of Great Britain and Ireland, Past Chairman of the UK National Co-ordinating Committee for Breast Pathology, Past President of the International Society of Breast Pathology, past Councilor of The European Society of Mastology, Steering Committee Member of The European Group for Breast Screening Pathology and past Chairman of the Breast Pathology Working Group of the European Society of Pathology. He has acted as an advisor to theDoH, UICC, WHO and IARC. He is founder of PathLore and Medical Director of Source Bioscience.