The transitions of the title are those in the life and intellectual development of one of the leading historians of late antiquity and Byzantium. Averil Cameron recounts her working-class origins in North Staffordshire and how she came to read Classics at Oxford and start her research at Glasgow University before moving to London and teaching at King's College London. Later she was the head of Keble College Oxford at a time of change in the University and its colleges. She played a leading role in projects and organisations even as the flow of books and articles continued, in an array of publications that have been fundamental in shaping the disciplines of late antiquity and Byzantine studies in the twentieth and twenty-first centuries.