Quantum Motion has raised £117 million to deliver quantum computing’s ‘transistor moment’.
The Series C round was co-led by DCVC and Kembara, with participation from new investors the British Business Bank and Firgun, alongside existing investors Oxford Science Enterprises, Inkef, Bosch Ventures, Porsche Automobil Holding SE and Parkwalk Advisors.
The British Business Bank invested £40m as the London firm becomes the UK’s best-funded quantum computing company.
Quantum Motion is developing silicon transistor-based quantum computers which fit inside existing standard data centres and racks.
The financing round comes at a defining moment for the computing industry, as governments and industry invest heavily in next-generation HPC and AI systems that demand vast capital and infrastructure investments.
Quantum is on course to become the next wave of computing to strain a power grid already being tested by AI data centres. In other approaches, a useful quantum computer is expected to demand infrastructure on an industrial scale, including multi-megawatt power consumption. Quantum Motion is built on the premise that this trajectory is neither inevitable nor affordable.
Quantum Motion’s silicon transistor-based approach – the same technology used in every smartphone and laptop chip manufactured today – enables delivering utility-scale systems with 100-fold reduction in cost and space requirements, and 1,000-fold reduction in energy consumption compared to alternatives.
Since its last funding round in 2023, the company has expanded internationally, opening new offices and labs in Spain and Australia, and deepened its manufacturing partnership with GlobalFoundries, tying its roadmap directly into commercial semiconductor supply chains.
In contrast to an industry that often competes on headline qubit counts and laboratory demonstrations, Quantum Motion has deliberately focused on industrial scalability, delivering the world’s first commercial deployment of a full-stack silicon CMOS quantum computer at the UK National Quantum Computing Centre (NQCC) in 2025 and advancing to Stage B of DARPA’s Quantum Benchmarking Initiative.
“Today’s announcement reflects the strength of the team we have built and the progress they have delivered. Quantum computing will only achieve its full potential if it can be built on a platform that scales, and we believe silicon is the strongest route to achieving that,” said Dr James Palles-Dimmock, CEO of Quantum Motion.
“We are pleased to be joined by investors who share our vision and understand what it takes to build a foundational company in this field.”
Dr John Morton (CTO) and Dr Simon Benjamin (CSO) said: “As founders we were inspired by the breathtaking accomplishments of silicon technology, with city-like complexity delivered on centimetre-scale chips.
“Now, Quantum Motion’s chips can be used not only for bits but also for qubits, unlocking a future in which quantum computers are both fast and ubiquitous.”
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Dr Prineha Narang, operating partner at DCVC, said: “Quantum is critical infrastructure for the next century of computing, AI, and security, and leadership will go to whoever can industrialise it.
“DCVC led this investment in Quantum Motion because silicon is the foundation that scales, and this team is building on the CMOS advantage to turn quantum from a demonstration into a commercial success story.”
Yann de Vries, partner and co-founder of Kembara, said: “If you believe quantum computing is going to be world-changing, as we do, then the obvious next question is which of the many ways of building one will actually work at scale? This investment signals our strong belief in where the answer lies.”
Charlotte Lawrence, managing director of direct equity, British Business Bank, added: “The race for a fully scalable quantum computer is one of the defining technological challenges of our time.
“Quantum Motion’s unique approach that combines cutting-edge quantum physics with established silicon manufacturing provides a distinct global edge.
“We are no longer just theorizing about quantum computing but are actively starting to build the platforms to deliver it here in the UK.”