Dean Leak is an Olympic performance strategist and international keynote speaker who teaches leaders how to turn tensions into competitive advantages through his Disagreeing Well System™.
Dean has worked with Olympic gold medal winning teams, Commanding Officers in the British Army, and senior government advisors. His clients include IBM, LinkedIn, L'Oréal, Baker McKenzie, Specsavers, and Air New Zealand. Trained by Professor Steve Peters, UK Special Forces leaders, and a leading hostage negotiator, he brings insights from elite sport, military operations, and FTSE 100 boardrooms.
Dean helps organisations build cultures where people challenge thinking and work through discomfort without damaging trust. His approach combines performance science, behavioural psychology, and practical leadership tools to enable courageous conversation and effective decision-making. Rather than teaching teams to avoid disagreement, Dean shows how to design conflict that drives momentum. This shift transforms high pressure situations from breaking points into breakthroughs, creating environments where innovation and accountability flourish.
Audiences learn how to speak up constructively in high-stakes situations, navigate difficult conversations that strengthen rather than fracture relationships, and build psychological safety that supports both challenge and cohesion. Dean delivers practical frameworks that move teams from avoidance to alignment and from politeness to measurable progress.
Book Dean to equip your organisation with the skills that separate teams who manage conflict from those who harness it.
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