People

Green Levers is governed by a board of trustees and supported by a small operational and advisory team with experience across conservation, community development, governance, science, and sustainable enterprise. Together, they provide oversight, strategic direction, and practical support to ensure the charity operates with integrity, independence, and a long-term perspective.

Nick Brown

Founder and Trustee

Nick Brown has a BA in Social Anthropology and Linguistics from SOAS, London. He founded Nikwax in 1977 and Páramo in 1986, pioneering environmentally responsible approaches within the outdoor industry.

In 2022, he transitioned both companies into an Employee Ownership Trust, embedding a long-term commitment to dedicate one percent of turnover to environmental and social causes. Nick has served as a board member of the European Outdoor Conservation Association and as a trustee of the World Land Trust.

As Founder and Trustee of Green Levers, Nick supports the charity’s strategic direction, drawing on his experience in sustainable enterprise, conservation, and long-term stewardship.

Luis Brown Castellanos

Trustee

Luis holds a BSc in Environmental Geography and International Development from the University of East Anglia and an MSc in Environmental Technology from Imperial College London.

He has professional experience in environmental management and business administration, including senior roles at Nikwax. Luis is currently CEO of Wadhurst Park, an 850-hectare farm and nature reserve in East Sussex, where he leads long-term landscape restoration, conservation and renewable energy initiatives.

As a trustee, he brings expertise in land management, digital mapping, and the application of technology in conservation and sustainibility.

Andina Rosalya Morris Brown

Trustee and Chair

Andina holds a BSc in Economics from the University of Sussex and an MSc in Statistics and Operations Research from Universitat Politècnica de Catalunya. She has over ten years’ experience in government, specialising in analytics, performance, and strategic delivery.

As Deputy Head of the Home Office Delivery Unit (HODU), she supports the department’s priorities on crime and policing by promoting outcome-focused performance management, risk planning, and leading deep dives to improve delivery. Andina has held analytical roles at the Cabinet Office and HM Revenue & Customs, where she developed insights and supported data-led decision-making.

Earlier in her career, she worked at Nikwax, gaining experience in performance data and executive support. She combines analytical expertise with a strong interest in sustainability and is committed to empowering communities and advancing environmental initiatives to create lasting impact.

Katie Vezia

Co-Founder/ Director of Operations

Over the past two years, Katie has worked alongside Nick to establish Green Levers as an independent charity, shaping its purpose, governance, and legal foundations, and overseeing charity registration, core policies, and operational set-up.

Katie has over a decade of experience across international development and public services. Her work spans programme management and safeguarding in highly regulated UK environments, alongside hands-on support for grassroots organisations in Latin America and other international contexts, including fundraising, communications, and capacity-building initiatives focused on child protection, education, women’s empowerment, and locally led development.

Her background includes risk management, stakeholder engagement, and partnership working, underpinned by a strong commitment to ethical, locally led change and long-term, trust-based partnerships.

Eduardo Rudas Burgos

Eduardo  graduated in Biology from the Universidad Nacional de Colombia and has professional experience in biodiversity informatics, including the digitisation and management of biological collection data.

He works at the intersection of biological sciences and technology, supporting data systems, spatial analysis, and applied environmental solutions.

His areas of interest include alternative wastewater treatment, rainwater harvesting, constructed wetlands, and landscape analysis using GIS, remote sensing  and keyline methods

Daniel
Van Der Post

Daniel holds an MSc and PhD in Theoretical Biology and Animal Behaviour from Utrecht University. His academic work includes postdoctoral research in Germany, the Netherlands, and the UK, where he studied the emergence of cultural phenomena in primate-like group foragers and the evolution of group foraging in artificial world models.

He has carried out extensive fieldwork in Indonesia, Ivory Coast, and Southern Africa and has managed long-term biodiversity research projects. Daniel currently works with a nature-based technology company developing biodiversity platforms and is actively involved in conservation work in Colombia.

He has a strong interest in evolution, primates, bees, complex systems, conservation, reforestation, and sustainable agriculture.

Edgar Mauricio Carreño Diaz

Mauricio holds a degree in Business Administration from the Autonomous University of Bucaramanga and postgraduate training in International Marketing from the Academy of Economics Schleswig-Holstein in Germany.

He is a purpose-driven leader with over twenty years’ experience across general management, international director roles, consultancy, and mentoring in the social care, manufacturing, and franchising sectors. His work spans Latin America, Asia, Africa, Europe, and the Middle East, and he has served on the boards of companies and associations in Colombia and Spain.

Mauricio has developed and delivered strategies for both commercial and social enterprises, building growth through strong relationships with investors and strategic partners. More recently, he has focused his skills on empowering underserved communities and supporting individuals to find purpose and direction.

Fernando Arbaláez

Fernando graduated in Biology at the Universidad Nacional de Colombia and holds an MSc in Tropical Ecology from the University of Amsterdam. He has also completed specialist training in Climate Change: Mitigation and Adaptation at the Swedish Meteorological and Hydrological Institute.

He has extensive experience working with local communities across the Colombian Amazon, La Guajira, Providencia Island and the Middle Magdalena Valley.

As a member of Fundación Biodiversa Colombia and owner of the El Silencio Reserve, Fernando has led community-based conservation initiatives for more than two decades. Since 2009, he has served as General Director of FBC and continues to support conservation and community engagement across Colombia.

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Green Levers aims to empower grassroots organisations to address global challenges including, biodiversity loss, climate change and community development.

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© Green Levers 2026

Green Environmental and Social Initiatives (GESI) is a registered charity in England and Wales (Charity No. 1214357) and a company limited by guarantee (Company No. 15784474). “Green Levers” is its trading name.