The Impact Equation

As Chief Executive of Yorkshire Housing, Nick Atkin leads the region’s largest provider of affordable, eco-friendly homes. He also chairs major regional partnerships and is pushing the government to treat housebuilding as a national priority. His team is at the vanguard of using data, sensors and AI to make housing services work better for the people living in those homes. In this episode of The Impact Equation, Nick joins Adam and Rafi to talk about why housing matters so much to health, dignity and life chances, and why leaders in the sector cannot afford to get stuck in sp...

In their latest wash up episode, Adam and Rafi reflect on recent episodes to explore how systemic change happens at a local and global level. They discuss the "triumph of place-based localism" through Simon Case’s work in Barrow and Claudine Blamey’s community-led flood resilience at Aviva, emphasizing that impact is most effective when rooted in the reality of people's lives. They examine the power of "harnessing capitalism for climate," contrasting Alyssa Gilbert’s focus on scaling innovation at Imperial with Luke Leslie’s investor-led approach to carbon markets and nature-based assets. The conversation also highlights the human side of leade...

This is the first episode in our second series, Scaling Tomorrow's Social Unicorns, with 100x Impact. Rhea Yadav leads impact and strategy at Wysa, the AI-led mental health platform that has supported more than 7 million people across 95 countries. She founded the organisation’s impact business and now works across governments, health systems, NGOs and employers to take evidence-based mental health support into places where care is scarce.

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What does it really take to deliver humanitarian aid in the world’s most fragile places? In this episode of The Impact Equation, we sit down with Madlin Sadler, Chief Operating Officer at the International Rescue Committee - an organisation working at the sharpest edge of conflict, disaster and displacement.

Madlin offers a rare, inside view of what it means to operate in over 40 of the world’s most crisis-affected countries; where systems have broken down, need is accelerating, and resources are shrinking. Madlin shares what it looks like to deliver vaccines to children in remote conflict zone...

Edward Timpson is the former Children’s Minister, part of the family behind Timpson, and brother of Lord James Timpson, now a Labour prisons minister. In this conversation with Rafi’s former Ministerial boss, Edward reflects on growing up in a family that fostered more than 80 children, alongside one of the UK’s best-known family businesses, recognised for both its high street services and a culture built on trust, kindness and second chances. That experience shaped everything that followed: family law, politics, reform in government, and his work today across children’s services and family care. Edward’s life and career...

Luke Leslie is the co-founder and CEO of Key Carbon, investing directly into businesses generating high integrity carbon credits, from clean cooking stoves in sub-Saharan Africa to regenerative agriculture in Europe and mangrove restoration in Myanmar. Luke explains how Key Carbon has borrowed from royalty and streaming models used in mining, then adapted them for carbon markets. The result is a more hands-on and structured approach that is attracting hundreds of millions of dollars of institutional finance into nature investment.

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In this episode, Rafi sits down with Claudine Blamey, Chief Sustainability Officer at Aviva. Claudine’s story starts far from the boardrooms of British business. She arrived in London from Tehran as a child, speaking no English. That experience shaped a mindset that has stayed with her throughout her career: nothing is forever, and even the most complex situations can be navigated. Three decades later, Claudine has helped shape sustainability strategy across sectors – from sustainable buildings at British Land to aviation’s first net-zero strategy at easyJet, and now climate and nature strategy at Aviva. In this conversation, she reflec...

This episode we're joined by Summer Kennedy for a special episode looking back at our first series with Fast Forward. In this series, we’ve featured three amazing entrepreneurs backed by Fast Forward, a trailblazing accelerator backing tech nonprofits solving urgent, global problems at scale. Summer quite literally drives Fast Forward forward; shaping the strategic vision and building the systems that get the organisation there. Her path to leadership has been anything but linear: from teaching first grade in Oakland to spearheading tech-for-good initiatives, Summer’s career proves that the most impactful journeys don’t follow a straight line. We refl...

This episode we're not joined by Ed Davey, the leader of the Liberal Democrats, but a pioneer on forests, agriculture and food security who has worked all over the world, from Tibet to Yemen and Colombia. With roots in social justice and anti-poverty campaigning, Ed cut his teeth in efforts around debt, poverty, and development with organisations like Oxfam and the wider Make Poverty History movement before joining the then Prince of Wales – now King – to drive high-level work on forests, sustainable agriculture, and climate through his International Sustainability Unit. Since then, Ed has become a driving force in the w...

Lord Simon Case served four British Prime Ministers as head of the UK's civil service from Boris Johnson in 2020, to Liz Truss, Rishi Sunak and Sir Keir Starmer. Lord Case held the most senior civil service role just as the government hit a run of shocks: Brexit implementation, Covid, war in Europe, economic turbulence, and rapid technological change. In this episode, he’s candid about what it feels like at the centre of crisis decision-making, and why government too often drifts into a self-obsessed “bubble” that’s disconnected from daily life. He also shares what gave him hope: meeting frontlin...

Alyssa Gilbert sits in a rare seat in UK climate innovation: translating world-class science into ventures that can survive the messy reality of markets, regulation, pilots, and procurement. In this episode, Alyssa shares what Undaunted at Imperial College London looks for at the earliest stages, why credibility and communication matter as much as the tech, and what actually helps founders move from “tested in a lab” to “traction in the market”. We also get into the built environment: waste-to-materials, energy management, and the very real barrier of being “the first” in a traditional sector.

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This episode is the first in our series with Save the Children Global Ventures, the impact investment arm of Save the Children, backing bold entrepreneurs tackling some of the world’s toughest challenges. In the first episode of the series, we’re joined by Fred Carpinteiro, Founder and CEO of Amparo Prosthetics, a company reimagining prosthetic care for people with limb loss across the world. Amparo is delivering lifetime prosthetic care across 6 continents, using smart technologies to dramatically improve comfort, fit, and user experience for lower-limb prosthetic users. With over 6,000 patients fitted in more than 45 countries, and products now used...

In our latest episode of The Impact Equation, we’re joined by Dominic Hofstetter and Ivana Gazibara from the Transcap Initiative, an NGO focused on developing and scaling systemic investing. Most of us start with a pool of capital and ask: what can this money do? Dominic and Ivana flip it: start with the challenge, diagnose the system, then “reprogramme” how money flows to multiple initiatives at once, so capital can actually shift outcomes, not just fund isolated projects. We talk about why “single-asset” investing struggles to deliver systems change, why place-based investing is close (but not always transformative), and their...

In this episode, we go deep into chemistry and mining with Paul Needham, CEO of ARCA, a company using carbon mineralisation to turn mine waste into giant, permanent carbon sponges. In 2025, Arca signed a 10-year deal with Microsoft to remove 300,000 tonnes of carbon from the atmosphere. Certain rocks naturally react with CO₂, pulling it out of the air and locking it away forever as stone. ARCA has found a way to massively accelerate that natural process, transforming mining tailings from an environmental liability into a climate solution. Paul's no stranger to scaling impact: he previously built Simpa Networks, bringing pay...

Carbon markets tend to trigger strong reactions. For some, they’re a vital bridge - a way to fund climate action at scale while the harder work of reducing emissions catches up. For others, they feel like a distraction, or worse, a way of outsourcing responsibility. So rather than arguing for or against them, we wanted to ask a different question: What would it take for carbon markets to actually work - with credibility and scale? In our latest Impact Equation roundtable, we brought together three people working on different parts of the system: Alastair is focused on data an...

What if the way we think about money is fundamentally wrong? In our latest episode of The Impact Equation, Rafi and Adam sit down with Hans Stegeman, Chief Economist at Triodos Bank - one of the few banks where sustainability isn’t a bolt-on, but the organising principle. Hans’s central critique is this: we haven’t just chosen economic growth - we’ve hard-wired it into everything. Our markets, financial returns, debt system, pensions, and public budgets all depend on the assumption that the economy must keep expanding. The problem is that this version of growth is material by desig...

In this episode, GSG Impact CEO Elizabeth Boggs Davidsen joins the show to share her journey from being mentored by Madeleine Albright to leading global efforts in impact investing. Drawing on her formative years working in conflict zones like Sudan and Afghanistan, Elizabeth explains how those experiences shaped her belief that traditional aid isn't enough and that we need new models to drive change. She dives into her work pioneering a $1 billion "blended finance" fund in Latin America and her time in the Biden administration, before looking ahead to the 2026 launch of the "Impact Economy Index"—a new tool de...

This podcast episode features Gaia Vince, a trailblazing journalist, broadcaster, and award-winning author, discussing the profound intersections of climate change and human migration. In this episode, Rafi explores Vince’s career shift from science journalism to documenting the "front lines" of our changing planet, culminating in the urgent thesis of her latest book, Nomad Century.

You can buy her book here: https://amzn.to/49b8ltk

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Across the previous seven episodes of The Impact Equation, we spoke with Charlotte O'Leary, Nick Wise, Lucy Heller, Stephen Cowan, Lord Browne, participants in the Mining Roundtable, and Tiffany Yu, exploring how lasting impact is built at scale across finance, oceans, education, cities, energy, extractives, and disability rights. Together, these conversations examined the tension between idealism and pragmatism, showing how commercial rigour, financial ingenuity, and institutional design are essential to sustaining impact; why policy alone is insufficient without deep cultural and mindset shifts; and how leaders must commit to the long game amid political, economic, and social volatility. From pensions...

In this episode, Rafi is joined by Tiffany Yu—a fierce disability advocate, entrepreneur, and changemaker whose work is reshaping how the world understands disability. As the founder and CEO of Diversability, Tiffany has built a thriving global community empowering disabled voices and fostering real inclusion. From a life-changing injury in her childhood to becoming a powerful force on the global stage, including speaking at the World Economic Forum and authoring the groundbreaking book "The Anti-Ableist Manifesto," Tiffany’s journey is one of resilience, vision, and transformative impact. In this episode, we’ll hear how she’s smashing stereotypes, forging...

This episode on The Impact Equation, we dive into one of the biggest tensions of the clean energy transition: the world wants an affordable, renewable future - yet achieving it requires a massive increase in critical minerals like copper, lithium, nickel and cobalt. So how do we mine what we need responsibly, safely and sustainably?

To explore this, we bring together Ro Dhawan (CEO, ICMM), Kirsten Hund (Director of Climate & Nature, Vale Base Metals), and Professor Tim Biggs (Camborne School of Mines). We discuss why the energy transition is impossible without new mines, the trade-offs around coal...

Lord John Browne was born just after the war in Hamburg to a Hungarian mother who survived Auschwitz and a British father who was a professional soldier. His parents met because his father needed an interpreter; she spoke six languages because, as she said, “in Hungary no one spoke your language, so you learned many.” From that unlikely beginning came a child who travelled the world, was pushed into self-sufficiency, and absorbed the lessons of survival, resilience, and ambition. From that childhood, he rose from a university apprentice at BP to its Chief Executive - leading the mega-mergers that turn...

This is our second live podcast at EdCity, with our friends at Ark. Stephen Cowan, Leader of the London Borough of Hammersmith & Fulham, has been a force in local public service since 1998, when he was first elected as councillor for Grove Ward. Since becoming Leader in 2014, he’s driven some of the most ambitious, people-centred policies anywhere in the UK - from free adult social care, to free breakfasts for every primary school child, to an industrial strategy that’s brought billions in investment into the borough. And where better to have this conversation than at EdCity - the £150 milli...

The first of two podcasts recorded live at EdCity. We kicked it off with an amazing guest, Lucy Heller, CEO of Ark and the architect behind one of the most influential education transformations in the UK. Ark began in 2002 with a bold ambition: change life chances for children who need it most. Under Lucy’s leadership, that ambition has become a movement — growing from a single turnaround school to 39 schools, 30,000+ pupils, and a network of 20+ ventures reshaping the wider education system.

In this live conversation, we go into: Lucy’s unexpected path into education, the original spark behind...

In this episode we speak to Nick Wise, Founder & CEO of OceanMind, an organisation using AI and satellite analytics to protect our oceans. Nick is a pioneer in applying advanced technology to build more sustainable food systems, tackle illegal fishing, and bring transparency to some of the world’s most complex supply chains.

Before founding OceanMind, Nick spent his career at the intersection of internet security, satellites, and data, and it was during his time at the UK’s Satellite Applications Catapult that a partnership with leading NGOs opened his eyes to the scale of illegal fishing - an...

In this conversation, Rafi sits down with Charlotte O’Leary, CEO of Pensions for Purpose; the collaborative network helping pension funds become a real force for good.

Charlotte’s vision is bold: a world where pensions drive a fairer, more sustainable economy. In this episode, she unpacks how psychology, governance and finance intersect - from fiduciary duty and systemic incentives to the need for new narratives around value, care and human motivation. Their conversation explores how we can shift from being consumers to citizens, and why aligning money with meaning might just be the key to fixing capi...

In this wash up episode, Rafi and Adam reflect on our seven most recent conversations, featuring pioneers Andrew Voysey, Michelle Brown, Alex Stephany, Phil Burton, Dame Ann Limb, Stephen Muers, and Anna Swaithes. We explore how change is driven by people and the push for local solutions and why social services must leverage AI to be human-centered. We cover an array of topics from Common Lit's edtech bringing reading access to millions and OttoCar decarbonising transport, to using data for regenerative farming to build more resilient food systems. Finally, we look at new ways to fund solutions, exploring how strategic...

This week, we talk to Anna Swaithes, Chief Sustainability Officer at The Crown Estate, a true champion of change and collaboration. Her journey into sustainability began with a powerful realisation in her early career that profits couldn't come at the expense of people and the planet. This core belief led her to pioneering roles at Cadbury and SAB Miller. Now, Anna uses the unique position and statutory basis of the new Crown Estate Act 2025 to ensure the Estate's management of its vast assets—from rural land to the seabed—delivers vital environmental and social value, especially by focusing on deep, mean...

This week we are joined by Stephen Muers, CEO of Better Society Capital, a leading UK impact investment institution. Stephen takes us on a journey from his early life in Rugby and his Quaker roots to his distinguished career as a civil servant and his pivotal role at Better Society Capital where he is revolutionising the UK's social impact investment landscape. Together we explore the intricate dance between impact investing and government policy, the vital importance of long-term vision, and the immense potential of place-based investing.

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ANNOUNCEMENT: Join our live Impact Equation podcast with Ark, exploring their journey, impact on education and social innovation and the vision behind the exciting EdCity project in West London. Thurs Nov 13th 2025, sign up here: https://tinyurl.com/tieark

This episode features Dame Ann Limb, a powerhouse in education, philanthropy, and regional growth. From becoming the UK's youngest college principal at 34 to chairing prestigious organizations like the Lloyd's Bank Foundation and City & Guilds, Dame Ann shares insights on purpose-led living, leadership, and inclusion. Discover what drives her extraordinary capacity for service and her vision for the...

Phill Burton is Co-CEO of Otto Car, a company quietly reshaping how London moves. Otto is now Europe’s largest provider of electric vehicles to private-hire drivers, helping over 20,000 drivers get on the road and accelerating the city’s transition to clean transport. Before Otto, Phil helped scale one of the UK’s great consumer success stories - Bloom & Wild - from £2m to £100m+ in revenue, leading across eight countries and every major function from Operations to Marketing. Today, he’s combining that experience with purpose, investing in ventures like Lune, Maeving, Climate X, and Shellworks, mentoring founders through See...

Alex Stephany is rethinking welfare for the 21st century. As Founder & CEO of Beam, Alex has built a platform that partners with 100+ government bodies to help thousands of people experiencing homelessness and long-term unemployment into stable homes and jobs. Combining expert caseworkers with smart AI software, Beam’s Magic Notes, is cutting admin for frontline staff and freeing them to do what they do best: supporting people. It’s why Beam has been named one of LinkedIn’s Top 15 UK Startups, with backing from the Mayor of London and some of the UK’s leading tech entrepreneurs. Now, Alex is scalin...

We're joined by Michelle Brown, a former teacher who has built one of the most impactful literacy platforms in the world. Michelle is the Founder & CEO of CommonLit, a free online reading program now reaching 30 million+ students across the U.S. and Latin America. Her journey began in the classroom, where she saw first-hand the barriers to literacy. What started as a small library of curated reading material has since grown into a global movement for open education.

Since founding CommonLit in 2014, Michelle has raised over $40 million from leading philanthropists and education innovators, been named Ernst & Young...

In this episode we’re joined by Andrew Voysey, Chief Impact Officer at Soil Capital, where he’s helping farmers take practical steps to improve soil health, cut carbon emissions, and build a more sustainable food system. Since 2020, Andrew’s programme has worked with nearly 2,000 farmers across the UK, France, and Belgium, paying them for the real climate benefits their farming creates. Before Soil Capital, Andrew spent a decade at the Cambridge Institute for Sustainability Leadership, where he grew and led their sustainable finance programme. He brings a unique mix of farming knowledge, finance, and innovation to the fight against climat...

In this wash up episode, Rafi and Adam reflect on our seven most recent conversations, featuring pioneers like Paul Ronalds, Mikela Druckman, Nick Temple, Matthew Gould and more. We explore how people-powered systems change is transforming the social and environmental sectors. We also examine how technology, from Greyparrot's AI waste management to VectorCam's disease-fighting tool, is being used to innovate for impact. Finally, we look at new funding models, reshaping how we fund and scale solutions for a better world.

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We’re joined by Sunny Patel, biomedical engineer, co-founder of VectorCam, and one of the driving forces behind a breakthrough that’s turning heads across global health and even on Bill Gates’s personal blog. Developed at Johns Hopkins, VectorCam is an AI-powered mosquito identification tool that works straight from a smartphone. It can tell you a mosquito’s species, sex, and even where it is in its reproductive cycle - vital intel for tackling diseases like malaria, dengue, and Zika. Before VectorCam, this kind of surveillance needed a microscope and years of training. Now, thanks to Sunny and his team...

This episode we’re joined by Sayyeda Salam, a remarkable leader whose career has spanned humanitarian aid, international development, and philanthropy.

In September 2024, Sayyeda became Executive Director of Concern Worldwide (UK), bringing her wealth of experience to the fight against extreme poverty. Previously, as Director of Partnerships and Philanthropy at Save the Children, she secured £300m+ for children’s rights, building transformative collaborations with philanthropists, foundations, and the private sector. Her journey has taken her from Jordan and Lebanon to Egypt, Tanzania, and the Gulf; always with a focus on empowering local operations and partners across Africa, Asia...

Nick Temple OBE is at the forefront of the UK’s social economy as CEO of the Social Investment Business. Nick leads an organisation backing charities and social enterprises with the capital and support they need to grow and thrive. His contributions were recognised last year when he was awarded an OBE for services to social enterprise. In this conversation, Nick shares his journey, his philosophy on what makes social investment work, and his vision for the future of the sector. 

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In this episode we’re joined by Paul Ronalds - lawyer, founder, policymaker, NGO leader, and now CEO of Save the Children Global Ventures. Paul’s career has been anything but conventional: Advising on M&A at a top-tier law firm, Co-founding one of Australia’s first e-commerce start-ups, Serving two Australian Prime Ministers at the highest level of government, Leading Save the Children Australia for nearly a decade. Now, at Save the Children Global Ventures, he’s on a mission to rewire how the world funds and scales solutions for children. From edtech and e-health to impact investing and inno...