Dr Peter
Gruenewald, MD

Dr Peter Gruenewald, MD is a physician and applied leadership practitioner specialising in state regulation, sleep, and performance under pressure. He integrates clinical medicine, behavioural science, and executive leadership to create practical, trainable methods that help leaders stay clear, composed, and effective in high-stakes environments.

He is a Clinical Specialist in Behavioural Sleep Medicine and Integrated General Medicine at University College Hospital London (RLHIM), and a part-time private GP in London, following 24 years as an NHS GP. He teaches and contributes to leadership development programmes including the UK Major Projects Leadership Academy (Cabinet Office / Saïd context), and served as an Associate Fellow at Saïd Business School, University of Oxford (2010–2024). His work supports leaders across public and private sectors.

Peter created the protocol-based training systems Executive State Training™ (EST), Leadership Presence Path™ (LPP), and Restorative State Training™ (RST). He is the author of Self-Leadership: Realize Your True Potential (2023) and The Quiet Heart: Putting Stress in its Place (2007).

Gaylin
Tudhope

Gaylin Tudhope is a psychologist and consultant psychotherapist with over 32 years of clinical and advisory experience. She supports leaders and organisations in psychological safety, relational steadiness, and ethical performance under pressure — particularly where trust, conflict, boundaries, and communication directly affect outcomes.

She supports Executive State Training™ (EST) and Restorative State Training™ (RST) as a voice contributor and advisor, helping ensure the programmes remain robust, practical, and safe to apply in real operational environments.

Her specialist work includes
high-stakes relationship dynamics in complex multi-stakeholder contexts, including family-enterprise and leadership-succession settings where personal systems and operational decisions strongly interact.

Gaylin has lectured at Brunel and Brighton Universities and has contributed as a writer and broadcaster on psychology and wellbeing. She is affiliated with professional bodies including the UK Council for Psychotherapy (UKCP) and the Institute of Directors (IoD), and is a Fellow of the British Autogenic Society.

Jon
Cowell

Jon Cowell is a business psychologist and leadership consultant.

Following an early career as a stockbroker and investment analyst, he has over 30 years’ experience assessing and coaching leaders and leadership teams, and teaching leadership to executives.

He is currently 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 (UK Cabinet Office).

He also works as Adjunct Faculty
at Henley Business School as Director of the Henley High Performance Leadership programme and teaching faculty on a range of custom programmes.

Jon is an advocate for
evidence-based practice and has led leadership research programmes for a range of clients in the public and private sectors.

His passion lies in enhancing leadership to foster thriving workplaces.

He is the co-author of Leadership: No More Heroes, Palgrave MacMillan, 2021.