Top 40 CleanTech Angel Investors in United Kingdom in January 2026

Portfolio highlights

• Yupp — Every AI for everyone
• Karat Financial — Karat is the best card for creators, helping you save money, earn rewards, and grow your channel faster - because content IS a business.
• Vantage Discovery — Vantage Discovery is a generative AI-powered SaaS platform that enables intelligent search, discovery, and personalized recommendations so apps can deliver breathtaking customer experiences.

Portfolio highlights

• Stackfix — Stackfix operates as a software comparison platform.
• Singulate — The early Hopin team (#1, #4, #30 are cofounders) are back together to solve the biggest problem they saw in events and marketing at Hopin. They’re building a next gen AI marketing platform called Singulate. Singulate provides the easiest way to do audience segmentation and better relevance-personalization for marketing to individuals at scale —results of up to 10X higher CTRs and 5X response rates. They’re helping marketers (in demand gen, growth, community/events) nurture and convert more pipeline from their events and existing customers - it’s not an AI cold outreach sales tool (although it can do reactivations) but rather a lifecycle growth marketing tool. The best personalization is invisible - this is the future of large-scale communication. Get a demo to see the product.
• Purple Dot — Sell More by Selling Earlier

Portfolio highlights

• Agnikul — Agnikul Cosmos designs and manufactures orbital-class launch vehicles powered by 3D-printed engines. From custom payloads to affordable private launches, we make space access simple, scalable, and mission-focused.
• Log 9 Materials — The spirit of innovation remains the cornerstone of every mission here at Log9. We have failed numerous times in this mission of ours, only to learn from them
• Toffee Ride - Learning App for Classes I - IV — Developed by a group of IIM, NIT alumni, with the support of academicians and child development experts, Toffee Ride is an app-based learning program that helps your child develop a thorough understanding of fundamental concepts and improve their language skills. Toffee Ride helps to make productive use of your kid's screen time by keepingthem engaged through a wide variety of fun-filled learning activities. Toffee Ride is specifically designed for Classes I-IV and contains more than 800 + lessons and 6000 + activities, which provide comprehensive coverage of English, Maths, EVS, GK, Social Studies, and Life Skills. Our Vision: “Making premium education affordable”The level of personalized attention required during the formative years is lacking in most schools, except for a few premium ones. Moreover, most parents, especially working professionals, often find it difficult to find time to compliment their kids learning in school. A rather serious implication of this is that children whose development lag behind during their early years find it very difficult to catch up in their higher classes. Through Toffee Ride, we attempt to bridge this gap using technology as an enabler to provide the much-needed personal attention in early learning.

Portfolio highlights

• Desia — Desia provides advanced AI applications for productivity, automation, and analytics for financial services.
• qomodo — Qomodo: La piattaforma BNPL innovativa. Rate a tasso zero, approvazioni veloci, transazioni sicure. Rivoluzionaria nell'acquisto per aziende e consumatori.
• Tranched — Introducing real-time on-chain securitisation. Fintech Lenders and Professional Investors can now launch an institutional-grade transaction up to 90% faster than before.

Portfolio highlights

• Oxwash — Powered by Vanish, Oxwash provides on-demand laundry and eco-friendly dry cleaning services, creating a simple and sustainable laundry service for all.
• tem. — Buy renewable energy directly from generators with Renewable Energy Direct (RED). Save big, bypass the wholesale market and power your business sustainably.
• Papaya — Papaya offers platform to source, run and manage your electric vehicles.

Portfolio highlights

• Oxwash — Powered by Vanish, Oxwash provides on-demand laundry and eco-friendly dry cleaning services, creating a simple and sustainable laundry service for all.
• tem. — Buy renewable energy directly from generators with Renewable Energy Direct (RED). Save big, bypass the wholesale market and power your business sustainably.

Portfolio highlights

• Verkor — Verkor is a battery cell manufacturer whose goal is to increase the production of low-carbon batteries to fulfill the growing demand for electric vehicles. The company focuses on the development of low-carbon batteries with a carbon footprint that is many times smaller than standard batteries. This reduces the logistics footprint, includingemissions, and provides businesses with batteries that are very inexpensive and use carbon-free electricity.
• Biomicrogels Group — Biomicrogels Group is the developer and patent holder for biomicrogels - a unique substance produced from agricultural waste such as sugar beet, apple, sunflower pomace - capable of addressing the global environmental and climate change problems.The company's biomicrogel-based solutions add value in produced water treatment, cutting fluidseparation, vegetable oil extraction, cleaning of oil spills at sea and on land.We also manufacture a range of environmentally friendly household cleaning products under own brand, WONDERLAB.
• Harbinger — Founded by veterans of Canoo and Faraday Future, Harbinger is an automotive company that develops EV platforms optimized for medium-duty trucks and delivery vans.

Portfolio highlights

• Jua — A new paradigm in weather forecasting. AI learning physics. Delivering accuracy beyond expectation. Covering use cases beyond belief. Accessible to everyone, wherever in the world they are. The world's first end to end deep learning model for weather forecasting, delivered on an intuitive platform for anyone to customise it. Startups,governments and large companies alike can now develop global, high frequency and high accuracy weather models within days.
• Altruistiq — Altruistiq is a decision-making environment for business sustainability teams.
• RosieReality — Rosie is an educational app for iPhone and iPad. The app is perfect for curious kids of ages 9 and up. Kids program Rosie the Robot using magical 3D shapes to explore AR puzzles.

Portfolio highlights

• Fundably — Fundably - Get The Right UK Business Loan | Access £1k-£2m
• MONET — Embedded finance for agencies and B2B platforms. Frictionless access to white-labelling B2B credit, global payments and new revenue streams. Offer white-label invoice finance to your network, driving growth for you and your suppliers.
• VIAN Therapeutics — VIAN Therapeutics is an early-stage biotechnology company focused on transforming retinal disease treatment. With a first-in-class, non-invasive eyedrop as its lead product, VIAN aims to replace invasive injections for conditions like age-related macular degeneration (AMD) and diabetic macular edema (DME). Backed by strong preclinical data andongoing clinical testing, VIAN is positioned to address significant unmet medical needs and disrupt the $15 billion retinal disease market.

Portfolio highlights

• Zumo — Zumo is a revolutionary new way for people and businesses to interact with money. When we say revolutionary, we mean it. Zumo’s not elitist. It’s not exclusive. It’s not only for the one percent. Zumo is smart money for everyone.Zumo allows you to buy, send and store crypto simply and securely. Zumo lets you exchange crypto seamlessly withtraditional currency and pay for goods and services anywhere with our Convertible Debit Card.ZumoPay is a safe and easy way for brands to accept payments in crypto currency, with lower transaction fees than traditional payment solutions.ZumoKit is our Wallet as a Service, Software Development Kit (SDK), giving you the ability to setup and manage your own cryptocurrency payments infrastructure.
• Be Nosy — Nosy is wearable tech with data play that helps you breathe purified air anywhere at any time. Our state of the art patented technology developed by former Dyson engineers is more effective at protecting you from pollution, viruses and allergens than any other solution in the market. While our particles and breathing sensor technology will help youknow exactly what is going into your body.
• Togather — Create your event on Togather, the UK's most trusted events booking platform, choose from our roster of over 1,500 of the best and most passionate creators...

Portfolio highlights

• Claimer — Claimer is a self-service application that gets credit claims done easily of money spent on research and development. Its platform empowers company owners and advisors to prepare their claims, without any specialist knowledge, no matter how big or small the claim. It also prepares and submits the amended tax return for free.Claimer was founded in2019 by Adam McCann and is headquartered in Croydon, United Kingdom.
• Bondaval — Bondaval secures receivables for the world's best credit teams, so they can extend more credit, win more business and get better financing terms.
• Koos — KOOS is a simple legal and technological solution for motivating and rewarding your community. Boost your growth by sharing success.

Portfolio highlights

• Factored — Factored empowers landlords to access capital, allowing them to effectively meet capital needs, significantly enhance tenant living standards and drastically reduce carbon emissions from their rental properties.

Portfolio highlights

• Nova Pangaea Technologies (NPT) — NPT is a cleantech company that has developed a revolutionary process technology called REFNOVA. REFNOVA allows customers to converts non-food plant residues into sustainable products such as biochar, activated carbon, biofuel, biopolymers and biochemicals. Our products help customers replace fossil based products and enable decarbonisation.

Portfolio highlights

• Kalder — Kalder is a unified web3 brand loyalty platform for brands and creators to drive meaningful engagement, onboard new users, and reward superfan communities.
• Stelia — Stelia builds distributed AI platforms that scale globally. Research-driven intelligent systems for healthcare, education, and enterprise operations worldwide
• Aurora — The Operating System for High Performance Living

Portfolio highlights

• Gradium — Gradium.ai provides audio language models that enable natural, expressive, ultra-low latency voice interactions at scale, unifying speech generation, transcription, voice transformation, and dialogue in a single neural architecture.The platform acts as an audio-native counterpart to text-based large language models, processing tasks like real-timespeech-to-speech with delays under 200 milliseconds through optimized architectures, efficient tokenization, and hardware-aware deployments. It supports multilingual capabilities in English, French, German, Spanish, and Portuguese, with plans for expansion.
• IXI — Discover adaptive glasses with autofocus lenses that adjust to your viewing needs, providing seamless clarity at any distance.
• Lovable — Lovable is an AI app and website builder that turns ideas into production-ready software without coding. Launch faster with AI.

Portfolio highlights

• Claimer — Claimer is a self-service application that gets credit claims done easily of money spent on research and development. Its platform empowers company owners and advisors to prepare their claims, without any specialist knowledge, no matter how big or small the claim. It also prepares and submits the amended tax return for free.Claimer was founded in2019 by Adam McCann and is headquartered in Croydon, United Kingdom.
• Unitary — We detect harmful content with context-aware AI to keep brands and platforms safe online.
• Fabric — One home for your digital world. Your second brain. A file explorer and workspace for the internet age. All your drives, clouds, notes, screenshots, links, and files in one calm, minimal app. No organizing required. Never forget anything again.

Portfolio highlights

• Forteus — Forteus is an asset manager focused on blockchain technology and digital assets.
• Emitwise — Empowering enterprises to achieve their Scope 3 reduction targets with accurate primary emissions data, powering procurement to decarbonise.
• Antler — Build your next company with Antler, a global day zero investor enabling exceptional founders to start great companies, from the very beginning. Apply now!

Portfolio highlights

• Heat Geek — Heat Geek makes it easy for homeowners to save money on their bills with AI designed, efficient heat pump systems.

Portfolio highlights

• Heat Geek — Heat Geek makes it easy for homeowners to save money on their bills with AI designed, efficient heat pump systems.

Portfolio highlights

• ARROE — ARROE software extends the lifespan of battery powered electronics, to reduce carbon emissions and e-waste
• MindLabs — Live sleep and meditation classes for your mind. Led by experts. Backed by neuroscience. Now available to download on the App Store.
• Fanbase — Fan engagement software built for the business of sport. Launch digital ticketing, memberships, hospitality packages in a matter of hours.

Portfolio highlights

• Altruistiq — Altruistiq is a decision-making environment for business sustainability teams.

Portfolio highlights

• MEplace — MEplace creates a new approach to children’s wellbeing and preschool education. MEplace was founded in 2019 and was headquartered in England, UK.
• Two — Buy Now, Pay Later for your business customers. Two makes it easy and safe to offer invoice as a payment method on your e-commerce site.
• Kota — Replace your tools, brokers and outdated processes with the only platform that handles the entire employee benefits journey.

Portfolio highlights

• Bpacks — Tree bark packaging

Portfolio highlights

• Bpacks — Tree bark packaging

Portfolio highlights

• Bippit — Bippit is a financial support system for employees, which provides them with a 1-1 financial coach, powerful tools, and practical resources.Research has shown that 3/4 staff members have financial concerns that directly affect them at work, but only 1/10 have been able to speak to an expert about them. This has a huge impact onbusinesses, as 15% of payroll cost can be lost from reduced productivity, presenteeism, and an increase in staff turnover, due to the financial worries of their workforce.Bippit makes professional financial support completely free for employees, whenever and wherever they need it, and is backed by early stage investors in Monzo, Freetrade, and Calm.
• Wally Health — Unlimited dental cleanings and whitening for $199/year
• Growth Kitchen — Growth Kitchen provides a network of delivery-optimized kitchens coupled with food delivery solutions and support.

Portfolio highlights

• Lawyerd — Lawyerd! is fully automatically found infringements, finding responsible for hosting bodies, formulating complaints, adding evidence of the violation, and sending completed complaints in 3 seconds. Also, our clients can store their products on our platform and put the information into the blockchain when products are created
• Voltaage — Take your fleet operations to the next level. Our comprehensive fleet management solution is perfect for sustainable fleets of all sizes. Discover now!
• PowerMarket — A platform for turn-key solar life cycle management.

Portfolio highlights

• Lick — Lick | Paints, Wallpapers and Supplies. Your Room, Covered
• By Rotation — Rent over 25000+ designer fashion items online from our free app. Discover luxury designer dresses, clothing, bags and accessories from your trending favorite brands.
• Anch.ai — Anch.AI is an Ethical AI Governance platform that helps you comply with EU regulations and avoid risks and penalties when developing and using AI as part of your business.

Portfolio highlights

• IXI — Discover adaptive glasses with autofocus lenses that adjust to your viewing needs, providing seamless clarity at any distance.
• Noah — API-first stablecoin payments, enterprise-grade compliance and real-time settlements, powered by stablecoin technology.
• Flow Engineering — Requirements management, made collaborative

Portfolio highlights

• Hydrologiq — Built for fuel providers and asset owners to manage their entire fleet. Makes using hydrogen, battery, or other technologies easy, afforable and scalable. Remote monitoring, delivery planning, and system-wide optimisation in one single platform.

Portfolio highlights

• Talyn Air — Inspired by two-stage rockets, our innovative eVTOL uses two flight vehicles to transform flight. Fixed-wing performance with VTOL capabilities.
• BillionToOne — We are a team at the forefront of disease detection focused on moving Prenatal Screening and Liquid Biopsy forward.
• CaSRevolution — A novel disease-modifying approach against neurodegeneration

Portfolio highlights

• Puraffinity — Puraffinity develops targeted materials for water treatment, focused on forever chemicals called PFAS. Our strategic intent is to provide 1 billion people with PFAS safe water by 2030
• Moixa Technology — Moixa Technology develops the Maslow intelligent energy storage solution, enabling homes to store energy and benefit from revenue streams generated by trading energy through GridShare, an SaaS platform that aggregates energy from groups of Maslow energy storage systems. . The company develops smart DC technologies to power DC lighting, computing,electronics from grid-shifted storage or local PV from smart DC hubs, variable DC networks and sockets. The technology and IPR reduces grid peak by shifting DC device load and powering DC devices efficiently without inverters or AC/DC adaptors, together with providing smart control and energy management. The technology aims to address the 1 trillion kwh + lost annually in power conversion, and the significant growing DC demand in homes, offices from ICT, LED lighting and the rise in internet connected devices.

Portfolio highlights

• qomodo — Qomodo: La piattaforma BNPL innovativa. Rate a tasso zero, approvazioni veloci, transazioni sicure. Rivoluzionaria nell'acquisto per aziende e consumatori.
• Omnea — The all-in-one procurement platform. Request purchases, automate approvals, and streamline your procurement process in one centralised solution.
• Dimension — The state of the art collaboration platform for modern engineering teams. Chat, project management, smart actions, and more, accelerated by AI.

Portfolio highlights

• Altruistiq — Altruistiq is a decision-making environment for business sustainability teams.

Portfolio highlights

• Oxwash — Powered by Vanish, Oxwash provides on-demand laundry and eco-friendly dry cleaning services, creating a simple and sustainable laundry service for all.

Portfolio highlights

• Soveren — Soveren helps engineering and security teams protect personal data by detecting privacy risks and analyzing real-time data flows within your infrastructure.
• Evercoin — Evercoin is a mobile application that provides a cryptocurrency exchange service. The application allows users to exchange cryptocurrencies like Bitcoin, Ethereum, Litecoin, Ripple, and Bitcoin Cash. Users can also trade from the safety and control of their own wallet. Evercoin was founded in 2017 and is headquartered in Santa Clara, California.
• Garnet Labs — Protect modern dev/ops environments with behavioral monitoring, threat detection and enforcement. Detect and block unknown threats in real-time before they impact users.

Portfolio highlights

• Hubflo — Hubflo is building an all-in-one work OS to help small businesses manage their business. Instead of having 10 complicated and expensive pieces of software, Hubflo offers SMB everything they need to run their business (CRM, projects, invoicing, expenses...) in a single comprehensive, simple and affordable platform.
• FUEL — Where everlasting fanbases are built
• Sidekick — Expertly-managed portfolios for the modern investor

Portfolio highlights

• SiPhox Health — SiPhox Health brings comprehensive, at-home blood testing to your door! Take control of your disease risk and increase your healthspan today with affordable, convenient at-home blood testing. No lab visits, no appointments, no waiting in line.
• Delphi — Delphi turns your expertise into an always-on presence, so you can grow your reach, serve your audience, and lead with clarity, without burning out.
• Cerebras Systems — Cerebras is the go-to platform for fast and effortless AI training. Learn more at cerebras.ai.

Portfolio highlights

• Heat Geek — Heat Geek makes it easy for homeowners to save money on their bills with AI designed, efficient heat pump systems.

Portfolio highlights

• Heat Geek — Heat Geek makes it easy for homeowners to save money on their bills with AI designed, efficient heat pump systems.

Portfolio highlights

• Bpacks — Tree bark packaging
• Casecraft AI — CaseCraft is a B2C SaaS platform that simplifies the small claims process with AI-driven automation—making legal claims quick, affordable, and stress-free. No lawyers, no complicated paperwork—just a seamless, user-friendly experience backed by legal expertise.We believe legal support should be accessible, modern, and easy to use—giving you thepower to resolve disputes efficiently from anywhere.