Complexas was founded on a simple principle:
You can’t make confident decisions or build long-term value in remote and underserved environments without truly understanding those environments.
For us, that means being on the ground, asking the right questions, and collecting data directly from the relevant people, communities, and places.
For over a decade, we’ve done just that: gathering high-quality, first-party data across the globe. Our goal is to give clients the clarity and foresight they need to navigate risk, build trust, and unlock opportunity.
Leadership Team
Andrew Mackay CBE
Co-Founder and CEO
Andrew Mackay is co-founder of Complexas and is responsible for the development and implementation of Complexas' strategy and narrative. He has been involved in the stabilisation of fragile and conflict-afflicted states throughout his career. These have included NI, Lebanon, Bosnia, Kosovo, Iraq, and Afghanistan. Andrew has worked extensively across sub-Saharan Africa. His principal focus has been on providing decision support to the resolution of complex political and social problems that delay the progress of a range of projects. This also includes the tools required to understand communities, the resolution of social conflict and the implementation of sound and realistic ESG practise. Andrew has written and co-authored a number of papers and books that address the challenge of understanding politics and communities in complex environments, including Behavioural Conflict: Why Understanding People and Their Motivations Will Prove Decisive in Future Conflict.
David Wombell
Co-Founder
David Wombell is co-founder of Complexas and is responsible for the delivery of all operational tasks and senior consultancy relationships. He has worked extensively in sub-Saharan Africa, the Middle East, and Asia over the last twenty-five years, developing a wide network of business, government and institutional contacts. David has been especially active in Africa since 2010, completing projects in Mozambique, Burkina Faso, Côte d’Ivoire, Ghana, Guinea, Mali, Nigeria, Senegal, Libya, Zambia, Madagascar, South Africa and Sierra Leone. Before co-founding Complexas, David held a senior Business Development position at Baobab Investments and prior to this served as an Officer in the British Armed Forces. David holds an MA in International Defence Studies from King's College London, as well as an MBA.
Featured Team Members
Our team includes experienced intelligence analysts, data scientists and country specialists. Meet a few members here:
Emma Madden
Head of Data Science
Emma is responsible for overseeing data collection methodology, implementation, and complex analysis. She is a computational social scientist with an MSc in Sociology and is finalising her PhD in Politics, both from the University of Oxford. She has worked at the United Nations, as well as in research labs at Columbia University and the University of Chicago.
Richard Warren
Geoscientist
As a military intelligence veteran and Edinburgh University postgraduate, Richard specialises in political and social geospatial data collection and analysis. He creates insightful mapping and visualisations that effectively communicate complex trends. Using cutting-edge technology to drive impactful decision-making, he has supported successful international development projects in Asia, Africa, Europe, and North America. Andrew has worked extensively across sub-Saharan Africa. His principal focus has been on providing decision support to the resolution of complex political and social problems that delay the progress of a range of projects. This also includes the tools required to understand communities, the resolution of social conflict and the implementation of sound ESG practise. Andrew has written and co-authored a number of papers and books that address the challenge of understanding politics and communities in complex environments, including Behavioural Conflict: Why Understanding People and Their Motivations Will Prove Decisive in Future Conflict.
Klara Slater
Director- Remote Field Operations
Klara manages a multinational team conducting extensive community surveys and interviews across remote regions, pioneering real-time reporting systems and delivering data-driven insights. She was previously a barrister, specialising in Family Law, and has lived and worked in China. She holds a BA in Philosophy, Politics and Economics from the University of Oxford.
Zoe Lambert
Data Analyst
Zoe focusses on data processing, analysis, and research methodology. Alongside, she is pursuing an MPhil in International Relations at the University of Oxford, with a research focus on local dynamics of conflict, and international development. She has significant fieldwork experience in the MENA region, particularly in Morocco and Jordan, and has functioned in a range of qualitative and quantitative research roles.
Jonathan Tostevin
Country Analyst
Jonathan synthesises diverse data sources from unserved environments into actionable insights for decision-makers. Prior to joining Complexas, he conducted microfinance field work across rural and urban Nigeria, and analysed frontier market sovereign debt from investment management firms in London and Lagos. He holds a First Class degree in History and Politics from the University of Oxford, where he specialised in economic development, state-building, and political dynamics across the African continent.
Jonathan Tostevin
Country Analyst
Jonathan synthesises diverse data sources from unserved environments into actionable insights for decision-makers. Prior to joining Complexas, he conducted microfinance field work across rural and urban Nigeria, and analysed frontier market sovereign debt from investment management firms in London and Lagos. He holds a First Class degree in History and Politics from the University of Oxford, where he specialised in economic development, state-building, and political dynamics across the African continent.
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