David Liddle

CEO & Founder of The TCM Group

CEO of award winning The TCM Group | transformational culture architect | bestselling author | top 20 HR most influential | Thinkers50 Radar | lifelong mediator

David has developed significant expertise and authority in the areas of organisational dynamics, leadership development, culture change and conflict resolution. He is author of two highly acclaimed books ‘MANAGING CONFLICT’ and ‘TRANSFORMATIONAL CULTURE’. Both texts are published by Kogan Page.

David has spent the last 30 years reframing HR systems, management processes, and leadership behaviours. He puts purpose, people and values at the heart of his customers organisations. With a mindset of collaboration, inclusion, and empowerment, he develops and integrates organisational cultures which are fair, just, inclusive, sustainable and high-performing.

David has created numerous models and frameworks including The FAIR Model™, The Transformational Culture Model™, The Transformational Triangle™, The Insight-Change Model™ and the Culture Flow System™. He draws inspiration from processes including, but not limited to: systems thinking, positive psychology, appreciative inquiry, restorative justice, behavioural science, principled negotiation, emotional intelligence, and nonviolent communication.

Following the completion of a degree in race relations in the early 90's, David led several high-profile inclusion and regeneration projects. In that time, he observed the insidious and damaging impact of unresolved conflicts and tensions within, and between, communities. Determined to find a better way, he went on to establish and lead one of the first community mediation and restorative justice (RJ) schemes in the UK.

In 2001, having been awarded an MBA with Distinction, David established The TCM Group (TCM). His vision for TCM was, and still is, to create people centred and values based workplace cultures; and to reduce the negative impact of conflicts and complaints by creating the conditions for employees and managers to have quality conversations. The TCM Group comprises several award winning brands:

• Transformational Culture™. A powerful suite of services for driving culture change.
• The Mediation Company™. Mediation and facilitation services and training.
• The Investigation Company™. Investigation and audit services and training.
• Resolution Framework™. Used for resolving concerns, complaints, and conflict at work.
• Engage Leadership™. A high impact leadership and management programme.
• Engage Coaching™. Provides coaching services to numerous global organisations.


In 2013, frustrated with the corrosive and adversarial systems for addressing issues in the workplace, David launched his ground-breaking Resolution Framework™. This Framework has been adopted by numerous organisations to replace their discipline and grievance procedures including major banks, insurers, hospitals, and government bodies.

David is a Fellow of the RSA, a member of The Leaders Council and he is the founder of the Institute of Organizational Dynamics (www.organisationaldynamics.org). David is a well-respected speaker, and he has written numerous articles and contributed to several texts. He is also a father of three beautiful children and he enjoys cycling and supporting local projects and initiatives.

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