Jamesty
The tech startup scene in the United Kingdom is thriving, and it is being driven by visionary founders who are revolutionising a variety of different industries. Not only are these businesspeople building successful companies, but they are also actively rewriting the rules of business and disrupting traditional models, thereby influencing the future of a variety of industries, including technology, finance, healthcare, and others.
List Of Top 10 Best Tech Startup Founders In UK 2025
1. Rishi Khosla
Rishi Khosla is a prominent entrepreneur and investor who champions innovation across industries. Khosla, co-founder and CEO of OakNorth, a £1 billion fintech company, has transformed scale-up lending. He filled a gap in traditional lending by using advanced data analytics to offer fast, flexible financing solutions for SMEs. Khosla’s success goes beyond OakNorth. In the past, he built and sold Copal Amba to Moody’s Corporation, which yielded over 200x returns for seed investors.The ‘Mentorpreneurship’ Program shows his commitment to entrepreneurship. His charitable work through The Rishi and Milan Khosla Foundation shows his dedication to giving back. Khosla’s investment portfolio includes fintech, biotech, and deep tech, demonstrating his passion for progress and his drive to advance industries through strategic support and innovation.
2. Victor Riparbelli
Co-founder and CEO of Synthesia, the world’s leading AI video creation platform, Victor Riparbelli is a powerful force in AI-powered video production. Under his leadership, Synthesia has democratised professional-quality video creation, allowing businesses to easily create and scale engaging videos in over 50 languages. Riparbelli has led Synthesia to top investors like Kleiner Perkins, Google Ventures, and Mark Cuban. In January 2025, the company raised $180 million in Series D funding, valuing it at $2.1 billion. Global brands like Reuters, Nike, BBC, and Amazon trust Synthesia’s innovative platform, highlighting its impact on corporate communications and content creation. After reaching $100 million in ARR in April 2025, Synthesia received a strategic investment from Adobe Ventures.
3. Tessa Clarke
Tessa Clarke, co-founder and CEO of Olio, a leading food-sharing app, is a prominent mission-driven entrepreneur known for her commitment to sustainability. Olio solves global food and household waste by facilitating community sharing, a powerful circular economy solution.
Olio has flourished under Clarke’s vision. By 2025, the platform had over 8 million users in 60+ countries, proving its mission’s appeal. Olio has redistributed 116 million meals and 15 million household items, preventing them from going to waste. The app’s “Food Waste Heroes Programme” partners with Tesco, Pret A Manger, and Amazon to reduce waste at scale. Tessa draws on her years of corporate leadership and passion for sustainability to combine business and environmental advocacy. The circular economy movement reveres her, shaping policy and inspiring change. A Better Business Act Ambassador, captivating TED speaker, and Sifted columnist, she has many roles.
4. Will Donnelly
Will Donnelly is a driven entrepreneur who wants to change eldercare. As co-founder and CEO of Lottie, he has created a trusted, tech-driven platform that helps families navigate, find, and finance later-life care, a crucial and stressful life stage. Lottie, founded in 2021 by Will and his brother Chris, quickly became a leading marketplace for care homes, home care services, and retirement communities. Lottie was named the #1 Startup in the Startups 100 Index in January 2025 for its rapid growth, innovative approach, and social impact. The company has raised over $30 million from Accel and General Catalyst, demonstrating market confidence in its vision.
5. Christopher Doman
Cado Security, a leading cloud-native digital forensics and incident response platform, is co-founded and CTO by cybersecurity expert Christopher Doman. Certified Host Intrusion Analyst and Cambridge Computer Science graduate. Threat intelligence, security research, and forensic analysis have been Doman’s specialities. Known for creating ThreatCrowd, which later became the AlienVault Open Threat Exchange (later acquired by AT&T). Doman has helped Cado Security develop cloud-specific cybersecurity solutions. Cado Security automates forensic data capture, processing, and analysis in multi-cloud, container, serverless, SaaS, and on-premises environments, reducing incident response times. He also developed the first distroless container forensics solution and Masked-AI, an open-source library for securely using Large Language Model APIs in incident response.
6. Katerina Spranger
Katerina Spranger is rapidly gaining recognition for her groundbreaking work in artificial intelligence-powered medical technology, specifically in the advancement of neurovascular surgery. She is making significant strides in the healthcare industry in the United Kingdom. Having established Oxford Heartbeat and serving as its Chief Executive Officer, she is at the forefront of the development of PreSize Neurovascular. By providing clinicians with the ability to plan procedures with greater precision, this cutting-edge software platform is intended to improve the safety and accuracy of brain implant surgeries.
7. Alex Kendall
Alex Kendall is a AI entrepreneur and enthusiast who is changing the game in the self-driving car business. He is the co-founder and CEO of Wayve, and he is leading the way in changing transportation with AV2.0, their next-generation AI-driven autonomous driving system. This new system stands out because it can learn from data and change to fit new situations. Kendall has done very well since co-founding Wayve in 2017. She has raised more than £1 billion from big investors like SoftBank, Nvidia, and Microsoft. He has also put together a “world-class team” that works in London, Silicon Valley, and Vancouver, making Wayve a leader in the autonomous vehicle space.
8. Ramy Shelbaya
Ramy Shelbaya is a quantum physicist and entrepreneur who is changing how we protect our information in the digital age. He is the co-founder and CEO of Quantum Dice. As cybersecurity problems get worse, especially with the rise of AI, Quantum Dice is changing the way data is protected by using “quantum randomness for encryption,” which provides the highest level of security. Since it started in 2020, the startup has received a lot of attention for its cutting-edge technology and has raised a lot of money, including a £2.09 million grant from Innovate UK
9. Shelley Copsey
A seasoned entrepreneur and technology leader who is at the forefront of artificial intelligence, infrastructure, and digital transformation, Shelley Copsey is currently being introduced to you. She has rapidly scaled the startup despite the fact that she is the co-founder and CEO of FYLD, which is an artificial intelligence-powered platform designed for real-time, data-driven decision-making in field operations. As a result of her leadership, FYLD has been able to successfully acquire funding totalling £26.3 million and has achieved an impressive 14th rank in the Startups 100 Index for 2025.
10. Christian Lanng
Christian Lanng, a serial entrepreneur and technology strategist, is developing AI-powered work automation. He co-founded Beyond Work, the first human-AI work platform. This platform helps businesses improve operations, productivity, and employee engagement. Beyond Work has raised £1.93 million from established investors like Moonfire Ventures and the MIT-affiliated E14 Fund. Fortune 500 companies are trialling the platform, demonstrating its early impact. Beyond Work’s SOC 2 compliance shows its dedication to innovation and data security.
