Dr Peter
Gruenewald, MD

 Physician, author, and Statecraft founder

Dr Peter Gruenewald is a physician, author, and applied leadership practitioner specialising in stress physiology, sleep, resilience, and self-leadership under pressure.

He integrates clinical medicine, behavioural science, and executive leadership development to create practical methods that help people return to clarity, steadiness, and purposeful action in demanding conditions.

He is a Clinical Specialist in Behavioural Sleep Medicine and Integrated General Medicine at University College Hospital London, and a part-time private GP in London. Following 24 years as an NHS GP, he has contributed to leadership programmes including the UK Major Projects Leadership Academy and Saïd Business School, University of Oxford.

Peter created Statecraft Training™, an evidence- informed lucid trance training programme for performance under pressure, including its Self-Recognition & Pattern Reordering work.

He is the author of Self-Leadership: Realize Your True Potential and The Quiet Heart: Putting Stress in its Place.

Gaylin
Tudhope

Psychotherapist, and leadership adviser

Gaylin Tudhope is a psychologist, consultant psychotherapist, and leadership adviser with over 32 years of clinical and organisational experience.

Her work supports leaders and organisations in psychological safety, relational steadiness, ethical judgement, and communication under pressure — particularly where trust, conflict, boundaries, and complex decisions affect outcomes.

Gaylin supports Statecraft Training™ and Restorative State Training™ as adviser, helping ensure the programmes remain robust, practical, relationally intelligent, and safe to apply in real-world professional settings.

Her specialist work includes consequence-heavy relationship dynamics in complex multi-stakeholder contexts, including family-enterprise and leadership-succession settings.

She has lectured at Brunel and Brighton Universities, contributed as a writer and broadcaster, and is affiliated with the UK Council for Psychotherapy and the Institute of Directors.

Jon
Cowell

Business psychologist and leadership consultant

Jon Cowell is a business psychologist and leadership consultant with over 30 years’ experience assessing, coaching, and developing senior leaders and leadership teams.

Following an early career as a stockbroker and investment analyst, Jon has worked extensively with executives, public-service leaders, and major project teams, helping them strengthen judgement, leadership behaviour, and decision-making in demanding conditions.

He is Chair at Edgecumbe Consulting Group and an Associate Fellow at Saïd Business School, University of Oxford, where he teaches on the UK Major Projects Leadership Academy and Orchestrating Major Projects programmes.

Jon also works as Adjunct Faculty at Henley Business School and directs the Henley High Performance Leadership programme. His work brings psychological rigour to leadership development, with a strong focus on practical judgement, evidence-based practice, and responsible action. He is co-author of Leadership: No More Heroes.