Mike Berners-Lee

Founder and Director

Mike consults, thinks, writes and researches on sustainability and responses to 21st century problems. He is the author of acclaimed books,  including There is No Planet B: A Handbook for the Make or Break Years, and How Bad Are Bananas? The carbon footprint of everything. He is a professor at Lancaster University, where his research includes supply chain carbon modelling, sustainable food systems and the environmental impact of ICT. He has made numerous speaking, radio and television broadcast appearances to promote public awareness of sustainability and climate change issues.

Dr Dmitry Yumashev

Principal Land Consultant

Dmitry has a background in applied mathematics and started his career as an aerospace scientist. He subsequently developed an interest in sustainability, and has worked on a range of projects with partners from academia, the private sector and UK Government. His contributions include scenario and uncertainty analysis of Arctic climate feedbacks and of soil carbon sequestration potential in the UK, as well as estimates of UK’s electronic waste flows to aid recycling. Dmitry is thrilled to work with SWC on assessing decarbonisation and carbon sequestration options for UK businesses in line with the 2050 Net Zero target.


Dr Sarah Donaldson

Senior Consultant

Sarah has a background in Ecology and Environmental Sciences, and completed a PhD in Plant Physiology at Lancaster University in 2018. She leads a variety of projects, including GHG audits for a range of organisations, carbon footprinting training courses, media and public communications work, and development of carbon calculator tools. 


Mairéad Brown

Assistant to Mike Berners-Lee

Mairéad has a BA in Law from Cambridge University and an MSc in Philosophy and Public Policy from the LSE. Her thirst for understanding the world has taken her from projects mapping coral reefs in Madagascar, to studying in Japan, to human rights work in rural Uganda and even management of an Irish pub in Kampala. It was from ski touring in the Arctic that her personal experience of the changing environment focused her efforts on the climate emergency. With 20 years of Executive Assistant and office management experience, Mairéad ensures Small World runs smoothly and supports the team with project administration and client liaison.



Dr Hannah Wright

Hannah has contributed to environmental conservation projects and developed ecological and agronomic research across the globe. She completed her MSc and PhD in soil and crop sciences at Lancaster University. Since, she has delivered carbon accounting projects for a range of businesses and organisations and continues to expand this work. Hannah has a special interest in the development of holistic nature-based solutions for resilient ecosystems and communities, and is building expertise in the application of specialised carbon accounting tools and approaches to sustainable land use projects.

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Dr Tom Davies


Tom has a background in Molecular Biology and studied for a PhD in photosynthesis at The University of Sheffield. Whilst at Sheffield he co-authored a sustainability audit that formed the basis of the university's sustainability strategy and campaigned for the university to switch to a clean energy supplier. Tom also undertook a PhD placement at Small World Consulting in 2020, working extensively on the updated version of How Bad Are Bananas? Returning to SWC in 2022, Tom now works on various consultancy projects, including the development of carbon calculator tools.

Dr Tom Higgs


Tom has a background in physics, having studied at Royal Holloway and Cambridge, completing his PhD there on superconducting spintronics. While continuing to work in physics during the pandemic, Tom became more concerned with working on the challenges to overcome the climate crisis. He had previously followed his interest in sustainable transport to work as a smart mobility engineer. Tom enjoys applying his training in precise yet systemic thinking to carbon accounting and consultancy work.


Charlie Rogers


Charlie has a background in biology and earth sciences, having graduated from the University of Bristol with a degree in Palaeontology and Evolution. She grew her passion for science communication whilst volunteering for the Bristol Dinosaur Project, and first got involved with Small World in early 2020, working with Mike on giving his ‘There Is No Planet B’ talks. With a particular interest in the last 66 million years of climate change during her degree, she is keen to apply her knowledge of past climates and to develop her skills to pursue a career in sustainability at Small World. 


Matthew Bond


Matt graduated with a 1st Class degree in Natural Sciences and Business Management from the University of Cambridge, where he also became involved in projects to reduce the environmental impact of the university. Matt developed his interest in carbon emissions through a Master’s by Research at Lancaster University; producing a tool to calculate the carbon footprint of the UK’s electronic waste recycling system. He is excited to be contributing to the field of sustainability through his work on carbon footprint and sustainability research at Small World.


Kirsty Fitzpatrick


Kirsty is a first-class English Literature graduate from Lancaster University and has recently completed an MSc in Environmental Change and International Development from the University of Sheffield. She became interested in the Climate and Ecological Crisis when working for Green Lancaster in her final year as an undergraduate student. Her role in the Student’s Union Sustainability Team led to engagement with over 1000 students and the team’s work helped the University’s declaring of a Climate Emergency. During this role, Kirsty also volunteered with Green Lancaster’s Don’t Ditch It, Donate It programme which saved 16,000 kg of items from landfill and raised over £3000 for Green Lancaster projects and charities. 


Gwen Harrison

Associate Consultant

Gwen is an independent climate change and sustainability consultant with nearly 20 years’ experience. She has worked with private, public and third sector organisations on projects covering a wide range of topics including low carbon energy, buildings, communities, land management and food systems. She has an MSc in Carbon Management from the University of Glasgow, and an earlier MSc in Petroleum Geology from Imperial College. She has worked with SWC on numerous carbon footprinting and sustainability projects over the last 8 years.


Alex Boyd


Alex is a graduate from Lancaster University having studied for an MPhys in Physics, Astrophysics and Cosmology. After graduating, he undertook an internship with a local sustainability charity researching methods to estimate the potential energy generation from solar PV in Ambleside. Alex began an internship with SWC in March 2020 and since then he has quickly developed an interest in EEIO modelling and carbon accounting as well as assisting with various consultancy projects including GHG audits, menu calculators, and assessment frameworks. Alex has recently begun a PhD programme in partnership with SWC and the Centre for Global Eco-Innovation. He is working on developing a global, multiregional EEIO model to help companies better assess their scope 3 emissions.


Lorraine Ritchen-Stones

Associate Consultant

Lorraine is highly skilled in business change and project management with an MBA, possessing a rich experience in health and social care and major capital programmes.  A key example being client project manager for an award winning £40m new build mental health hospital. The 2015 Boxing Day floods prompted Lorraine to change career from the NHS to study an MSc in Conservation and Biodiversity at Lancaster University. After interning with SWC, Lorraine now specialises in the application of research to land use, with a keen interest in natures carbon sinks e.g. peatland, wetland and forestry carbon sequestration.


Dr Robin Frost

Associate Consultant

After leaving Cambridge with a degree in computer science, Robin spent twenty-five years in business, working initially in the banking industry, then the food industry for eighteen years based in Yorkshire. With an increasing interest in sustainable business, he undertook an MSc in Environmental Informatics at Lancaster University. Whilst there he met Mike which led to him undertaking a PhD with Small World on estimating supply chain emissions in organisations. During and after the PhD Robin worked with Small World using and enhancing the technique of Environmentally Extended Input-Output modelling and applying it in a variety of settings. A move to Edinburgh and a new position working with Scottish Government has not ended his interest in sustainability and he provides advice and assistance in his spare time.

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Dr Gary White

Associate Consultant

Gary has over 30 years practical experience in developing and delivering programmes of work that build local capacity and support low carbon solutions-based thinking.  With a PhD in Marine Ecology, his experience includes the energy sector, sustainable construction and low carbon building design, life-cycle assessment, community capacity building and applied research and education. Gary is an Associate Lecturer in Energy Transition and Environmental Regulation at the Dept of Geosciences, University of Aberdeen.