Sociologist A H Halsey is Professor of Social and Administrative studies at the University of Oxford. He explores the concept of Status in Society for his third Reith lecture from his series entitled 'Change in British Society'. In this lecture entitled 'The Reconstitution of Status', Professor Halsey looks at the theory of class and status in order to argue the importance of position and power in influencing social mobility. He investigates how class and status can either support or oppose each other and how persistent inequalities are less and less protected from challenge.