What separates good security leaders from truly exceptional ones?

In this thought-provoking conversation, Nathan Mills, Global Head of Security at Brinks, shares a leadership philosophy built not on authority, but on trust, influence and curiosity. From technical surveillance countermeasures and diplomatic security to leading global teams at GE, Zoom and Brinks, Nathan explains why today’s most effective security professionals are those who can connect people, build relationships and inspire action rather than simply direct it.

At the heart of the discussion is a powerful idea: ownership isn’t as important as influence. Great leaders don’t need to control every decision or claim every success. Instead, they create the conditions for others to succeed, recognising that collaboration will always outperform hierarchy.

Nathan also explores why growth never happens inside our comfort zone. Whether taking on new leadership roles, relocating around the world or stepping into unfamiliar challenges, every stage of his career has reinforced the belief that resilience is earned through experience, curiosity and a willingness to embrace discomfort.

The conversation also explores servant leadership, empathy, trust, AI, physical and cyber security convergence, mentoring and the future of leadership in an increasingly technology-driven world. Along the way, Nathan offers practical advice on building trust, managing diverse teams, influencing without authority and remaining authentic in an industry that often rewards certainty over vulnerability.

This isn’t simply a conversation about protecting organisations. It’s a masterclass in leading people.

If you believe leadership is measured by the number of people who work for you, think again. Nathan Mills makes the case that the greatest leaders are remembered not for the authority they held, but for the influence they had.