World-leading thought and action on climate and sustainability
How could you thrive in a sustainable world?
We help organisations of all sizes to understand the issues facing humanity, the role they can play, and how to thrive in the volatile world ahead. We help you engage with the challenges, find the opportunities, play your part, and tell your story. We'll make you anthropocene-fit.
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We don’t offer box-ticking. Organisations should exist to benefit people and planet. If that’s not your aim, we may not be the right fit. If it is, we’re here to help—wherever you are in your journey.
​We know where numbers can help – and when you need something more.
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If you need help calculating your carbon footprint using the most in-depth and custom research, or you want to explore the many ways you could become truly sustainable, our expert team will give you evidence-based assessments and inspire you to take impactful actions.
Carbon accounting alone doesn’t make you sustainable, but it's an important piece of the jigsaw.
We’ve been leading the industry for many years, offering system-complete, transparent, realistic, robust, and practical carbon accounting.
We count everything and show you where and how to take action.
We look at your industry in the context of the emerging polycrisis, not just carbon numbers.
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We help you explore the opportunities and threats in new ways.
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Discover your full impact – how you can do less bad and do (and feel) more good.
We help every part of the food supply chain understand how to optimise your role in food production, nature recovery, climate, and livelihoods.
We measure emissions across landscapes and map your priorities to your landscape to show how every parcel of land fits with your vision.
Our Multi-Regional Input-Output model (SWC MRIO) helps you to calculate the most reliable, system-complete carbon footprint.
We give you a transparent methodology and specialist one-to-one support so you know exactly what your emission factors contain.
We've counted the carbon in all kinds of industries
We have over 20 years of experience working with organisations from telecoms and finance to manufacturing and retail. We know the emissions in everything from an email to a pair of trainers.
We've also got expertise and a research background in looking at food and land. We've measured the carbon footprint of a tub of ice cream and a whole National Park.
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Small World's global impact
We're proud to work with companies like Cogo, Ecologi and Sage, which use our data to help 1000s of businesses and individuals measure their carbon footprint, the first step in taking action to reduce it.
Our work with clients like BT Group is helping it lead the way in low-carbon telecoms. And helping the team at AMRC to think big about sustainability has them leading the whole of UK manufacturing to a sustainable future.
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“ The work and methodology applied by the Small World team is probably some of the most refined and rigorous in the corporate GHG reporting landscape.”
Matt Manning, Head of Circularity and Net Zero, BT Group.
Led by Prof. Mike Berners-Lee, our team of consultants bring a wide background of research and experience to our carbon and sustainability work.
Our mission is to help you be part of a truly sustainable future. How working with us will push you to make the biggest positive impact on the planet possible.
Our research feeds into our work with clients, policy and wider communication around climate, carbon measurements and sustainability.
News and resources
Sage, SWC and the British Business Bank launch Carbon Commons
Carbon Commons is a course correction for carbon accounting. It enables a practical, realistic, robust, comparable and complete carbon accounting of all.
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Launched at London Climate Action Week in June 2025 with our partners Sage and the British Business Bank. Find out how Carbon Commons marks a step-change in carbon accounting, and how you can get involved.
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New expanded methodology for SWC MRIO v2.0
We've updated our methodology for our MRIO model, with more details on our data sources and the calculations and assumptions we make to generate our emissions factors.
We also have a new custom licence based on your needs. Tell us about your use case, the number of countries and years you want data for and we'll give you a custom price that covers just the data you need.