# Top 30 CleanTech Angel Investors in United Kingdom in May 2026 ## Paul Forster - Type: Angel - Relevant deals: 4 - Stages: Seed, Series A, Pre-Seed - Focus: Software, FinTech, Financial Services Paul Forster ## Biz Stone - Type: Angel - Location: San Francisco, California, United States - Relevant deals: 4 - Stages: Seed, Series A, Pre-Seed - Focus: Software, Messaging, Mobile Biz is a co-founder of Twitter, Medium, and Jelly. A progenitor of social media, and early Google employee, Biz has been developing large scale systems that serve the global conversation for twenty years. As an investor, Biz has backed Square, Pinterest, Slack when it was called Speck, Nest, Intercom and Beyond Meat (where he remains on the boardas Chair of the Nominating and Governance Committee), among others. In 2016, Stone's Jelly, a "human in the loop" AI search service, was acquired by Pinterest. After the sale, Twitter requested Biz return full time to lead the company's strategic vision, brand, and internal culture objectives alongside co-founder Jack Dorsey. Biz has been recognized as INC Magazine Entrepreneur of the Decade and one of TIME's 100 Most Influential People in the World. He is also an author, filmmaker and Fellow at both Oxford University and Berkeley. ## Uday Kumar Bangalore Shivaraman - Type: Angel - Location: Bengaluru, Karnataka, India - Relevant deals: 3 - Stages: Seed, Series B, Equity Crowdfunding - Focus: FinTech, Financial Services, E-Commerce Angel / Sophisticated Investor and Trader (Ex London Stock Exchange(LSE), Deutsche Bank, London Clearing House(LCH) ) , Invested in 60+ Startups / 4 successful exits (with Avg 20x) and counting more. (Web3 -> udaybs.ETH )Invested in following asset classes from past 2 decades across UK / India / US / Europe / -Private Equity (Seed / Growth / VC/ Acquisition / Merger) - Equity Markets - Real Estate - FX - Commodity - Bonds - Fintech, Blockchain, Crypto Market, Web3 , DeFi, NFT - Derivative Markets / Hedging / F&O / CFDGrowing Wealth in bumpy economic rides - There is no secret formula. Investment is an art. Being vigilant, dynamic, connecting dots, evaluating risk with constant change, loads of patience and visualising medium to long term.Private Equity Investments across globe in following domains / categories: - Energy - EV / Carbon Footprint - Blockchain / FinTech / AI / ML / Web3 / DeFi - D2C / B2C - Food & Beverages - Pharma - Media & Entertainment ## Holly Branson - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 2 - Stages: Seed, Series A - Focus: CleanTech, Logistics, Transportation Holly Branson Chief Purpose and Vision Officer at Virgin. ## Serge Chiaramonte - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 2 - Stages: Seed, Pre-Seed, Series A - Focus: FinTech, Financial Services, E-Commerce Serge Chiaramonte ## Sam Branson - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 2 - Stages: Seed, Series A - Focus: CleanTech, Laundry and Dry-cleaning Sam Branson Co-founder at HiddenLight Productions. ## Magnus Rausing - Type: Angel - Relevant deals: 1 - Stages: Seed, Pre-Seed, Series A - Focus: E-Commerce, Financial Services, FinTech Magnus Rausing ## Ross Mason - Type: Angel - Location: Geneva, Geneve, Switzerland - Relevant deals: 1 - Stages: Seed, Series A, Pre-Seed - Focus: Software, Artificial Intelligence, Machine Learning Created the Mule Project, Founded MuleSoft, gone public (MULE:NYSE). Work on their product direction, vision and strategy. Active investor and advisor. ## Vishal Rao - Type: Angel - Location: Boston, Massachusetts, United States - Relevant deals: 1 - Stages: Seed, Pre-Seed - Focus: Software, Artificial Intelligence, Information Technology Advisory CTO and Angel Investor ## Pietro Invernizzi - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Seed, Pre-Seed - Focus: Software, FinTech, Payments Pietro Invernizzi is the Investor Stride.VC. Attended King's College London. ## Gregory Bernstein - Type: Angel - Location: Stockholm, Stockholms Lan, Sweden - Relevant deals: 1 - Stages: Series A - Focus: Manufacturing, Biotechnology, AgTech Gregory Bernstein is the Gregory Bernstein Venture Lead at EQT Ventures . He attended Georgetown University. ## Greg Jackson - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Seed - Focus: Software, CleanTech, GreenTech Greg Jackson is the Founder and CEO at Octopus Energy. ## Stuart Gardner - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Pre-Seed, Seed, Angel - Focus: Funding Platform, Delivery Service, Sustainability Stuart Gardner ## Matt Clifford - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Seed, Pre-Seed - Focus: Software, FinTech, Artificial Intelligence Matt co-founded EF after being a consultant at McKinsey & Co. Prior to EF Matt spent his time studying at MIT fuelled by an obsession with R, Python and unusual datasets. EF is the best place for Europe’s top technical individuals to meet and build world-changing startups in London.They select purely on the basis of technical talent, so youcan apply before you have a team or an idea. The intensive 6-month programme is designed to give you the best possible support in the first 200 days of your startup’s life.They have created over 40 startups now worth over $300 million. The startups are funded by some prestigious investors including Balderton Capital, Index Ventures, Octopus Investments and Y Combinator. ## David Helgason - Type: Angel - Location: Copenhagen, Hovedstaden, Denmark - Relevant deals: 1 - Stages: Seed, Pre-Seed - Focus: Software, Gaming, Information Technology David is a technologist, the founder of Unity Technologies, non-exec director to others, and a restless entrepreneur with a passion for creating feedback loops between innovation and teams and products, applying new and old business models to changing industries, and pushing people to do the very best they can do.David's background is inprogramming, an assortment of university dabbling, creating companies, and helping entrepreneurs. He served as CEO of Unity Technologies since co-founding it in 2003 and until October 2014, with an unflinching vision to democratize game development, and to develop technology and business models for the next phase of the games industry. David Helgason attended the University of Copenhagen. ## Martin Olczyk - Type: Angel - Location: Torino, Piemonte, Italy - Relevant deals: 1 - Stages: Pre-Seed, Seed, Series A - Focus: Software, Information Technology, Artificial Intelligence - MD at Techstars (Berlin/Amsterdam/Turin) currently investing in Smart Mobility companies. - Founding member, CFO/COO of Cunesoft (acquired by Phlexglobal) - Founder of GeeXstar, Asia's first tech-focused investment banking boutique - Founder of Clappifieds.de , a classifiedsmarketplace for Apple products - Mentor at TechGrind, Thailand’s first tech incubator, investing in promising startups across SEA – Founder of HonMed, a network for independent emergency doctors in Germany – Founder of a CoWorking space ## Siraj Khaliq - Type: Angel - Location: Zürich, Zurich, Switzerland - Relevant deals: 1 - Stages: Seed, Series A, Series B - Focus: Software, Artificial Intelligence, Logistics Siraj is a Partner on the investment team at Atomico. As a former computer scientist and co-founder/CTO of the successful Atomico investment The Climate Corporation, Siraj now continues his love for entrepreneurship “on the other side of the table” as a venture capitalist. He focuses on companies enabled by machine learning, AI and computervision, (particularly in intelligent assistants), IoT, Agtech, and works with a number of portfolio companies.Siraj founded The Climate Corporation in 2006, a company that pioneered the use of machine learning in helping farmers to optimize crop yield. Climate (acquired by Monsanto in 2013 and now a subsidiary) still sits at the vanguard of precision agriculture, an industry that is expected to play a key role in delivering the yield boosts needed to feed humanity in the decades ahead.Prior to this, Siraj was an early engineering hire at Google in 2001, and one of the founding engineers for the Google Book search project. He holds an MS degree in Computer Science from Stanford University, and a BA Hons in Computer Science from the University of Cambridge, UK. Siraj speaks fluent English, advanced Urdu, and just enough German to be dangerous.An enterprising child, Siraj taught himself to code in C at age 13, and wrote and sold his first piece of software, a database for medical research, at 15. He is a fan of functional programming languages, and still enough of a geek to spend the occasional weekend trying out new languages and frameworks. ## Jonathan Seaton - Type: Angel - Location: Sheffield, Sheffield, United Kingdom - Relevant deals: 1 - Stages: Seed, Pre-Seed - Focus: Software, Education, Internet Jonathan Seaton is the co-founder and chief executive officer at Twinkl. ## Evelyn Bourke - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Seed, Pre-Seed, Series B - Focus: InsurTech, Insurance, Software Evelyn was appointed Bupa’s Group CEO in July 2016, having been Acting Group CEO from April 2016. She is also a member of the Bupa Board and Nomination & Governance Committee.She has a strong track record in global executive management and extensive experience in financial services, risk and capital management, and mergers and acquisitions.Evelyn joined Bupa as CFO in September 2012, from Friends Life where she was Chief Executive Officer of its Heritage division. Previously at Friends Provident, she was the Executive Director responsible for strategy, capital and risk and, before that, Chief Financial Officer.Evelyn grew up on a dairy farm in Ireland and she’s the eldest of six. She was one of the first two women in Ireland to qualify as actuaries. She began her career with New Ireland Assurance and Bank of Ireland. She holds an MBA from London Business School and was previously a Non-Executive Director of the IFG Group in Ireland. Evelyn is currently a Non-Executive Director of the Bank of Ireland Group plc and a member of their Audit Committee and Nomination and Governance Committee.On becoming Group CEO in April 2016, Evelyn established a clear Strategic Framework to focus the organisation on delivering for customers.Evelyn believes strongly in promoting diversity in the workplace and empowering people to deliver high standards of service and care for customers. ## Mudassir Sheikha - Type: Angel - Location: Dubai, Dubai, United Arab Emirates - Relevant deals: 1 - Stages: Seed, Pre-Seed, Corporate Round - Focus: Mobile, Software, CleanTech Mudassir Sheikha is the co-founder and CEO of Careem, MENA’s leading car booking service that is based out of Dubai and operates from Morocco to Pakistan.Prior to Careem, Mudassir was an Associate Partner at McKinsey & Company, where he advised clients on strategy and business building. Before McKinsey, Mudassir spent a decade in the SiliconValley building technology startups, where he was most recently the co-founder of DeviceAnywhere, which was eventually acquired by Keynote Systems. He has an academic background in Computer Science and Economics from Stanford and USC. ## Steve Pankhurst - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Seed, Pre-Seed, Angel - Focus: Software, Internet, Personal Health Steve Pankhurst ## David Pitt-Watson - Type: Angel - Relevant deals: 1 - Stages: Seed - Focus: CleanTech, GreenTech, Biotechnology David Pitt-Watson - Visiting Fellow @ Cambridge Judge Business School ## Andrea Dusi - Type: Angel - Location: Verona, Veneto, Italy - Relevant deals: 1 - Stages: Seed, Pre-Seed, Series A - Focus: Biotechnology, Health Care, Information Technology Entrepreneur and investor. After working in management consulting, in 2006 he created Wish Days, known above all for the Emozione3 gift boxes. In April 2016, he sold the company to the Smartbox group with a millionaire exit. In 2017, together with Cristina Pozzi, already a partner in Wish Days he founded Impactscool.He is advisor of dozens oftechnological initiatives and business angels in 150+ startups focusing on clean tech.He is the author of the book “Come far fallire una startup ed essere fellici” – How to make a startup fail and be happy, published by Bompiani, Bestseller in 2018. ## Michael Pennington - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Seed, Pre-Seed - Focus: Software, Information Technology, Financial Services One of the UK's leading tech angel investors. Active seed and pre-seed stage angel investor in UK based disruptive tech. Prefers businesses venturing into pastures new and keen investing at the pre product stage whether BtoC or B2B. Twice exited UK based tech entrepreneur with experience operating tech businesses in 20 countries in multiplelanguages. Co-founded Gumtree with Simon Crookall which was acquired by Ebay and Slando acquired by Naspers. ## Leon Lewis - Type: Angel - Relevant deals: 1 - Stages: Seed - Focus: CleanTech, Laundry and Dry-cleaning Leon Lewis ## Ilkka Paananen - Type: Angel - Location: Helsinki, Southern Finland, Finland - Relevant deals: 1 - Stages: Seed, Series A, Series B - Focus: Software, E-Commerce, FinTech Ilkka Paananen, is the CEO and co-founder of Supercell, the Helsinki-based mobile games developer behind Clash of Clans, Hay Day, Boom Beach, Clash Royale and Brawl Stars. Since its founding in 2010, Supercell's five games have amassed 100m daily players and remain in the global top 10 years after launch. In June 2016, Supercell became thefirst European technology start-up to reach a valuation of $10 billion.In addition to his role at Supercell, Ilkka helps other entrepreneurs as both an investor and as an active member of the Nordic startup community where he mentors and coaches other founders. Alongside his co-founder Mikko Kodisoja, he has established the We Foundation to fight social inequality and help disadvantaged children in Finland.Prior to founding Supercell, he was the CEO & co-founder of Finnish games developer Sumea, which was later acquired by Digital Chocolate, where he worked as President until 2010. Ilkka holds a Master of Science degree from the Helsinki University of Technology. ## Ian Hogarth - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Seed, Pre-Seed, Series A - Focus: Software, E-Commerce, Health Care Ian got a master's in machine learning at Cambridge and loves dystopian robot takeover narratives. Seven years ago, Ian realized being a choirboy came with no street cred, so he started DJing hip-hop, funk, drum & bass, and grime. Ian quit his job at Bain & Company, Singapore to start Songkick. ## Niklas Zennström - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Series A, Seed, Series B - Focus: Software, Internet, Apps Niklas Zennström is CEO and Founding Partner at Atomico. He works daily with founders and sits on the boards of Farmdrop, Lilium, Pipedrive, Oden Technologies and Varjo. Niklas is an experienced technology investor and entrepreneur, having previously co-founded and managed globally successful technology companies including Skype, Kazaa andJoltid. Niklas founded Atomico in 2006. He is passionate about partnering about founders solving big challenges facing their planet with digital technology.In 2007, he co-founded Zennström Philanthropies with his wife, Catherine. They focus their efforts in two areas: human rights and the environment. Niklas also founded the Race for the Baltic, a foundation for a well-managed and sustainable Baltic Sea, one of the most threatened major bodies of water in the world.Niklas is a keen yachtsman and has won four World Championships with his yacht racing team, Rán.Niklas holds dual degrees in Business and MSc Engineering Physics/Computer Science from Uppsala University in Sweden, and he spent his final year at the University of Michigan. ## Jon Claydon - Type: Angel - Location: London, England, United Kingdom - Relevant deals: 1 - Stages: Seed, Angel, Pre-Seed - Focus: Software, SaaS, App Marketing Jon Claydon ## Ian Cheshire - Type: Angel - Relevant deals: 1 - Stages: Seed - Focus: Software, CleanTech, GreenTech Ian Cheshire # About Shizune Shizune.co is an investor database. Core features: - 48,091 startup investors (angels, VCs, accelerators, and others) - Email, phone, LinkedIn (for intros), socials, and other contact data - Updated daily from public funding news - CSV and Excel export The User can access the full database FOR FREE after signing up: shizune.co