We direct our deep expertise to form genuine partnerships

To realise real-world impact, we have built a world-class roster of leading sustainability specialists. With backgrounds in academia, corporates, finance, non-governmental organisations and industry bodies, our people are internationally renowned experts in their own right.

Senior Management Team

  • Dr Rory Sullivan

    CEO

    Rory co-founded Chronos Sustainability in 2017 with Nicky Amos. An internationally renowned expert on climate change and sustainable Investment, he is also Visiting Professor in Practice in the Department of Geography and Environment at the London School of Economics and Political Science (LSE).

  • Nicky Amos

    Managing Director

    Nicky co-founded Chronos Sustainability in 2017 with Rory Sullivan. A global expert in animal welfare and corporate responsibility, Nicky develops and leads a range of complex multi-stakeholder sustainability initiatives.

Consultants and Analysts

  • Gemma James

    Regional Director, Asia

    Gemma is our Regional Director for Asia - based in Phnom Penh, Cambodia - and takes a leading role in the company’s biodiversity and nature services. She has over 15 years’ experience developing strategies, undertaking research, conducting stakeholder engagement and managing coalitions. Gemma has worked across a spectrum of nature related topics including biodiversity, water, deforestation, plastics and the circular economy. Prior to Chronos, Gemma spent several years at the Principles for Responsible Investment and the International Council on Mining and Metals. She holds an MA in Environment, Policy and Globalisation from King’s College London.

  • Dr Rebecca Drury

    Principal Consultant, Nature

    Rebecca is our Principal Consultant on biodiversity and nature. She has over 20 years’ experience leading projects and developing multi-stakeholder initiatives with partners from civil society, development banks, investors and governments, and has specialist knowledge in environmental governance, human rights and nature stewardship.  She is also a member of the UK Government's Illegal Wildlife Trade Advisory Group, helping to shape policy and action at the highest level. Prior to Chronos, Rebecca worked at Flora and Fauna International. She holds an MSc in Anthropology, Environment and Development and a Ph.D. in Anthropology from University College London.

  • Tanya Cox

    Principal Consultant, Ocean and Pollution

    Tanya is Chronos’ Principal Consultant on projects relating to the ocean, water, pollution and the chemicals sector. She has 20+ years experience in marine conservation and related environmental policy with a track record of strategic development and project management across a broad range of stakeholders including corporates, industry, standards bodies, investors and policymakers. She has expert knowledge of plastic and microplastic pollution and has helped design and implement international coalitions in this area. Tanya holds a Master of Oceanography degree from the University of Southampton.

  • Chup Priovashini

    Consultant, Responsible Investment and Health

     Chup is a leading Consultant in our responsible investment and health work. For over five years she has helped Chronos deliver projects, undertake detailed research and support coalitions and programmes on a range of social and environmental topics including mental health, climate and net zero, and the governance of AI. She holds an MSc from the University of Oxford on Nature, Society and Environmental Governance. 

  • Cora Buentjen

    Senior Analyst

    Cora is an experienced researcher and analyst at Chronos. She works alongside Chronos’ subject matter experts in areas such as climate change, nature, responsible chemicals, food and health and responsible investment. She has led on, or supported, the development of a range of tools and methodologies to advance clients’ sustainability goals, and helped manage secretariats and coalitions. She holds an MSC in Environmental Policy and Regulation from The London School of Economics and Political Science (LSE).

  • Sebastien Akbik

    Consultant, Responsible Investment

    Seb is an experienced Consultant across our responsible investment and mining work. He has a decade of experience in sustainability and responsible investment consulting with a specialism in the mining sector. He takes a leading role in the research and secretariat services that Chronos provides to the Global Investor Commission on Mining 2030. Prior to Chronos, Seb spent several years at the Principles for Responsible Investment and at Digby Wells Environmental. He holds an MSC in Environmental Technology from Imperial College, London.

  • Dr Nathan Rhys Williams

    (MRCVS)

    Principal Consultant, Animal Welfare

    Nathan is responsible for leading our work in the food and health sectors, including management of major multi-stakeholder programmes such as the Business Benchmark on Farm Animal Welfare (BBFAW) and the Global Coalition for Animal Welfare (GCAW). He has 15 years’ experience developing and embedding animal welfare standards across global supply chains with specialist experience in engaging NGOs, investors and customers in high-scrutiny contexts and in supporting businesses to translate animal welfare commitments into measurable delivery. He is a qualified veterinarian and holds a BVSc in Veterinary Science from the University of Liverpool.

  • Hannah Wakelin

    Consultant, Health

    Hannah is a seasoned Consultant who takes a lead on Chronos’ work in health, including mental health. She has over 15 years’ experience in responsible investment and sustainability, specialising in technical consultancy, project management and delivery on global benchmarking, best practice, and disclosure initiatives. Prior to Chronos she worked for Vigeo Eiris and then Moody’s. She holds an MSC in Development Studies from Birbeck University.

  • Katherine Button

    Consultant, Animal Welfare

    Katherine is a practiced Consultant who contributes to our extensive corporate work on animal welfare, sustainable food and health-related issues. She has over a decade of experience in animal welfare related issues and supports the management and delivery of several flagship programmes including the Global Coalition for Animal Welfare (GCAW), and the Business Benchmark on Farm Animal Welfare (BBFAW). Prior to Chronos she worked for the Alliance to Save our Antibiotics, and she holds an MA in Magazine Journalism from City St George’s, University of London.

  • Ria Popat

    Analyst

     Ria is an expert researcher and data analyst. She has a specialism in animal welfare, supporting activity for the Business Benchmark on Farm Animal Welfare (BBFAW) and the Global Coalition on Animal Welfare (GCAW), but also contributes to the company’s wider work including its nature and responsible investment activity. Prior to Chronos she was a Senior Scientific Officer with the UK Government’s Department for Environment, Food and Rural Affairs. She holds an MSc in Global Wildlife Health and Conservation from the University of Bristol.

  • Josie Zenger

    Josie Zenger

    Analyst

    Josie is a skilled data analyst and research practitioner. She supports the wider team in a range of areas including Chronos’ work in responsible investment, biodiversity and nature and animal welfare. Prior to Chronos she worked at The Gantry Group in New York. She holds an MSc in Social Research Methods from The London School of Economics and Political Science (LSE).

Specialist Team

  • Laura Fox

    Specialist, Nature and Biodiversity

    Laura has over 20 years’ experience working on biodiversity within corporate agricultural supply chains, and agriculture within international conservation programmes - including REDD+ programmes and landscape scale multi-stakeholder collaborations. She has spent the last five years working with investors, corporates and civil society on business risks and opportunities related to biodiversity and nature. She also provided additional research support to Tony Juniper on his book Just Earth. She holds an MSc in Environment and Development from the University of East Anglia.

  • Elliot Frankal

    Specialist, Communications

    Elliot is an experienced PR and communications professional, specialising in sustainability. He has served as Head of Communications at the Principles for Responsible Investment and Flag Communications, and he founded and sold boutique sustainability firm ESG Communications.

  • Robert Black

    Robert Black

    Specialist, Responsible Investment

    Robert is an experienced sustainable investment professional with a track record in understanding and assessing how investors and companies manage their environmental, social and governance risks.

  • Brendan Mannix

    Specialist, Organisational Strategy and Development

    Brendan is an experienced business/executive coach, project delivery specialist and business leader.

  • Briony Fitzsimons

    Specialist, Corporate Sustainability Management & Reporting

    Briony is a sustainability manager with over 20 years’ experience, focusing on sustainability strategy and policy, carbon inventories, behavioural change and sustainability reporting for multinational companies.

  • Arisa Kishigami

    Specialist, Sustainable Investment (Asia/Europe)

    Arisa provides specialist consultancy on sustainable investment programmes and has deep experience of Asian and European financial markets.

  • Elisabeth Tjärnström

    Specialist, Animal Welfare

    Elisa provides specialist animal welfare consultancy including support for programme planning and execution in relevant markets. Elisa also supports Chronos’ food and animal welfare programmes providing research, analysis, and training services.

  • Dr Heleen van de Weerd

    Animal Welfare Specialist

    Dr Heleen van de Weerd is a global farm animal welfare consultant whose specialism lies in working with clients to apply welfare knowledge in order to improve the quality of animals lives as well as business performance. 

  • Darren Vanstone

    Director of Corporate Engagement and Policy

    Darren is a specialist on animal welfare and sustainable agriculture and provides expertise with a specific focus on companies in the Americas, Asia and Australasia regions.

  • Dr Steve Webster

    Specialist, International Policy and Strategy

    Steve is a regulation, strategy, policy development and implementation specialist for the agricultural, fisheries and food sectors.

  • Amanda Williams

    Director of Communications

    Amanda is an experienced communications professional with a demonstrable and long-term track record gained from around 20 years within the investment management industry.

  • David Russell

    Specialist, Sustainable Investment (Europe)

    David will help co-create and deliver work programmes for Chronos’ responsible investment and corporate sustainability clients, as-well as supporting the growth of the business.

  • Dr Ian Woods

    Specialist, Sustainable Investment (Australia/NZ)​​

    Ian provides specialist consultancy on climate change and responsible investment programmes across the asset class spectrum. 

  • Dr Jon Day

    Specialist, Agri-Food and Behavioural Science

    Jon provides is an agri-food consultant whose specialism lies in nutrition and the behavioural sciences. He is an experienced networker, manager and researcher. Working effectively in both academic and commercial environments, Jon is a strategist and an innovator and has developed several new multidisciplinary platforms of research which operate across competencies.