Mark Cole is an OD practitioner with over 30 years' experience working on development in organisations in and around the NHS. Latterly, he has been critically thinking about work and the workplace and his book called Radical Organisation Development was published by Routledge in 2020.

John Higgins is an independent researcher, tutor, and coach specialising in how people use and abuse power throughout the workplace and society. He is widely published and has written extensively alongside the faculty and students of the Ashridge Doctorate and Masters in Organizational Change.