David is a globally renowned authority in the fields of conflict management, HR, culture change, and leadership. He is the author of two highly acclaimed books. His first book, ‘Managing Conflict', transformed the landscape of dispute resolution. David's second book, ‘Transformational Culture' was published in October 2021 to rave reviews. His next two books are due to be published in 2025. ‘How to Disagree Well' and ‘People and Culture – a practical guide for HR and leaders.'

Having started life as a mediation and conflict management consultancy, David's company, The TCM Group, has evolved into a global consultancy offering HR, leadership and culture change consulting services and training programmes. In 2024, David was recognised as one of HR's most influential thought leaders. He has won numerous awards including the HR impact award for his work transforming the HR policy framework at Burberry and mediation consultancy of the year for his work embedding a mediation programme into Aviva.