About Us

We are the Crowded Places Security Advisory Group (CPSAG) – a diverse network of safety advocates, community leaders, and professionals working together to foster safer, more inclusive public spaces across Aotearoa. Our collective expertise spans public safety, community engagement, security strategy, and emergency response.

Meet the CPSAG Members

Chris Kumeroa

Security Advisor

Founder & Principal of Global Risk Consulting (GRC), Chris brings elite tactical experience and global leadership to CPSAG. A former Special Forces Mountain Troop operative, he has deep expertise in counter-terrorism, human tracking, and high-risk mountaineering.

Chris previously served as Country Security Risk Manager for Schlumberger in Pakistan, coordinating with major energy firms such as BP and CNPC. He now leads GRC in delivering risk assessments, incident response, and strategic planning for global clients.

He is undertaking postgraduate studies in Risk Management at Loughborough University and is a recognized member of the NZ SAS Association and the Institute of Directors. His contributions to global security have been acknowledged with the Iraq Reconstruction Service Medal.

Chris Lawton

Executive Security & Public Safety Leader

Chris is Executive Chairman of the Security Institute of New Zealand and CEO of the Trust Board for Community Patrols of New Zealand. He brings over 30 years of security and public safety expertise to CPSAG.

A former NZ Police officer of 20 years, he served in armed offenders, investigations, and bomb squad units. His international roles include Deputy Chief of Security for the United Nations in East Timor during the 2000 crisis.

Chris now heads C4 Group Ltd, New Zealand’s top security training provider, and works with NZ Police on crime prevention strategies. He is a recipient of the 2015 Security Industry Leadership Award and serves as a Commissioned Officer in the NZ Defence Force.

Sir Ken Mckenzie 

Founding Chairperson, CPSAG | HSE Manager, The Lines Company

Ken is a specialist in cultural safety, crowded places protection, and the integration of human factors with technology. He has held senior leadership roles across health and safety, risk management, and operational strategy.

As CPSAG’s Founding Chairperson, he leads national competency standards for security consultants in crowded environments. His expertise spans emergency management, public facilities, transport logistics, and cultural institutions.

Ken is founder of KM HSSR Consulting and was recognised as a Top 10 Influencer in Commercial Security (IFSEC, 2020). In 2025, he joined The Lines Company as HSE Manager, driving a transformation in health and safety excellence.

Jack Milford QSM

Founding Director, OPSEC Solutions Limited

Jack is the Founding Director of OPSEC Solutions Limited, a company specialising in comprehensive risk management. He brings over 35 years of experience in emergency management, security risk assessment, investigations, and situational safety training, developed through distinguished service with the New Zealand Army and Police.

Jack’s career includes specialised close protection work in high-risk environments overseas, and he was awarded the Queen’s Service Medal in 2000 for his exemplary work with the United Nations in East Timor. Through OPSEC, he delivers operational security for vulnerable clients abroad, conducts detailed security risk reviews, and provides frontline staff safety consultancy and training to manage conflict and build resilience against extreme violence and natural emergencies.

Jack contributes to CPSAG with a focus on enhancing preparedness and resilience against international and domestic terrorist threats. His expertise supports both local and international organisations seeking practical and proactive solutions to complex safety and security challenges.

Warwick Hall

Director Section 646 & Safety Set Consulting | IFEA World Board Member

Warwick is a safety and security professional with extensive experience in counter-threat planning, health and safety consulting, and event risk management. He operates two complementary businesses – Section 646 and Safety Set Consulting – to deliver holistic solutions for clients across high-risk and public-facing sectors.

Section 646 provides specialist services including threat assessments, security planning, target hardening, penetration testing, and tailored training. Safety Set Consulting focuses on integrating counter-threat strategies with broader health and safety requirements, offering a full suite of compliance and risk mitigation services.

Warwick is a certified medical trainer up to Pre-Hospital Emergency Care and an ISO 45001:2018 Lead Auditor. He holds diplomas in Occupational Health and Safety Management and Police Studies, and is currently engaged in Terrorism Studies through the University of St Andrews. His training in human behaviour detection and his leadership role on the IFEA World Board reflect a strong commitment to safety across global event environments.

Shane O’Halloran

Chief Operating Officer, Armourguard Security

Shane has over 36 years in policing and private security, and currently serves as COO of Armourguard Security, overseeing operations for over 1,700 personnel nationwide.

His career began in the NZ Police Criminal Investigation Branch, where he developed deep investigative and preventative experience. Since 2003, he has expanded Armourguard into a leading national security provider.

Shane’s leadership promotes a unified “One Armourguard” culture, blending operational excellence with personal growth. His strategic vision underpins adaptable security services across the public and private sectors.

Dr. Bridgette Sullivan-Taylor

Strategic Risk & Resilience Expert

Bridgette is a globally recognised academic and practitioner in strategic risk, resilience, and decision-making under uncertainty, with over 30 years of experience.

Her qualifications include a PhD from Warwick and academic posts at institutions such as Cambridge, Oxford, and the University of Auckland. She has led consulting, risk education, and internship programs in NZ and abroad.

Currently, she advises boards and organisations including KiwiRail, and judges industry awards. A published author and JP, she continues to influence risk best practices through teaching, speaking, and civic leadership.

Calum Nicholson

Event Operations & Movement Specialist

With over 20 years of experience in crowd movement and transport logistics, Calum is a recognised authority in the global event industry. His expertise encompasses planning, modelling, and delivering complex movement systems for high-profile international events.

From 2015 to 2023, Calum was Chief Technical Officer at FOAMHAND, where he helped transform the company into a world-leading consultancy specialising in City Operations and Movement Management. He led efforts in crowd demand modelling, pedestrian and transport planning, operational readiness, and event-time execution.

A career highlight was serving as City Operations Manager for London 2012, overseeing all pedestrian and vehicle movements at the Olympic Park during both the Olympic and Paralympic Games. Earlier roles include Head of Transportation at BCHF (UK) Ltd and Senior Traffic Engineer and Associate at Beca, where he applied his transportation planning skills to major events and urban projects. Calum’s combination of technical expertise, strategic insight, and operational leadership continues to shape safe and efficient movement at large-scale events.

Sue Ramsay

Group Manager, Protective Services | Health NZ

Sue Ramsay is a seasoned leader in security and community safety, currently serving as Group Manager, Protective Services at Health New Zealand | Te Whatu Ora. In this national role, she leads the development and implementation of protective security strategies across the country’s public health system.

With over a decade of experience in healthcare security, crime prevention, and public sector leadership, Sue is a recognised expert in Crime Prevention Through Environmental Design (CPTED) and community-based safety frameworks. From 2018 to 2024, she was Director of Healthcare Security Services at Te Whatu Ora | Te Toka Tumai Auckland, following her earlier role as Head of Security Services, where she established foundational infrastructure and protocols for one of New Zealand’s largest healthcare providers.

Prior to her healthcare tenure, Sue spent nine years at Christchurch City Council in key strategic roles, including Crime Prevention Team Leader and Metropolitan Community Advisor. There, she championed CPTED, SafeGrowth initiatives, and urban safety design. A respected CPTED practitioner and national forum chair, Sue combines strategic oversight with practical community insight to advance safer environments across Aotearoa.