In this interview Prof. Alex Haslam discusses his past and present work in social and organisational psychology and the multiple ways in which these two fields are inter-connected. He considers the guiding threads within his scientific activity from the famous BBC Prison Study to more recent work on leadership. Covering both theoretical to applied considerations, this interview addresses important questions for psychologists working in organisations and elsewhere in society. It offers a glimpse into the fascinating world of humans as social beings capable of forming groups and sharing identities, of including but also excluding, of both following and leading.