Andy Williams MSyl
Founder & Lead Instructor
Security, Risk & Crisis Management
Andy is a senior security, risk, and crisis-management practitioner with over 30 years’ experience working across humanitarian, NGO, commercial, and conflict environments.
He has held senior leadership roles including Global Head of Safety & Security, Country Security Manager, and Regional Security Advisor, supporting operations in complex and high-risk contexts including Afghanistan, Iraq, Ukraine, Syria, Palestine, the Democratic Republic of Congo, and across the Middle East and Eastern Europe.
His work focuses on practical, judgement-based security management — bridging policy, operational reality, and human decision-making under pressure. His experience includes crisis leadership, duty of care governance, acceptance-based security, access negotiations, contingency planning, incident management, and safeguarding integration in both active conflict and post-conflict environments.
A British Army veteran, Andy transitioned into humanitarian and NGO security leadership, where he has designed and implemented organisational security strategies, led crisis management teams, trained international and national staff, and advised senior leadership on operating safely, ethically, and in alignment with humanitarian principles.
As a trainer, Andy is recognised for a calm, pragmatic, and inclusive delivery style. His programmes prioritise real-world judgement, structured decision-making, and the preservation of life over simulation-based theatrics. Training is grounded in lived operational experience and designed to equip participants with the confidence and clarity required to make proportionate, defensible decisions in complex environments.
Andy is the Founder and Lead Instructor at Peritus Global Training, delivering bespoke security, risk, and crisis-management programmes to NGOs, humanitarian professionals, and organisations operating internationally.
Sarah Patel
Training Coordinator
Peter Southern
Peter “Pete” Southern is a senior security and specialist training instructor with extensive experience designing and delivering security, mobility, and risk management training for defence forces, United Nations programmes, NGOs, and commercial organisations operating in high-risk and complex environments.
A Sandhurst-trained former UK Special Forces officer, Pete has held operational leadership and advisory roles across conflict and post-conflict settings including Afghanistan, Iraq, Africa, Central Asia, and Europe. His experience includes security and risk management support to UN election programmes, border forces, defence units, and commercial entities requiring robust duty-of-care and movement security solutions.
Since 2014, Pete has worked as a specialist trainer for a global defence equipment manufacturer, delivering bespoke training to international defence forces, UN operations, and partner organisations. His earlier roles include Country Manager in Afghanistan, Operations Officer in Iraq, and consultant positions supporting organisational restructuring, security planning, and operational delivery.
Pete is highly experienced in travel security, vehicle mobility, logistics planning, and operational risk assessment. He is a licensed Close Protection Operator, Vehicle Mobility Specialist, and Offensive/Evasive Driving Instructor, with additional expertise in communications systems, movement planning, and safety management. He has also delivered safety and security training for government personnel and corporate teams.
Known for his calm authority and practical delivery style, Pete specialises in translating real-world operational experience into realistic, actionable training that supports sound judgement, responsible decision-making, and effective risk management in uncertain operating environments.
Emma Li
Client Relations Specialist
Client Feedback
“Peritus Global Training Ltd provided me with the skills and confidence I needed to succeed in my new career path. Their hands-on approach made all the difference!” - James Thompson