Richard Ballard is a Principal Researcher at the Gauteng City-Region Observatory (a partnership between the provincial government of Gauteng, the University of Johannesburg and the University of the Witwatersrand) and a visiting Professor at the University of Johannesburg. He is a geographer with a focus on social and spatial transformation in South Africa.

Clive Barnett was Professor of Geography and Social Theory at the University of Exeter, UK. His most recent book is The priority of injustice: locating democracy in critical theory (2017).