London-based quantum computing startup Quantum Motion has announced the completion of a $160 million Series C funding round. The company is focused on developing scalable quantum computers using standard silicon transistor technology. This investment round was co-led by DCVC and Kembara, with participation from the British Business Bank, Firgun, and existing investors. This marks the largest single venture capital funding round for a UK quantum company to date.

Quantum Motion utilizes a silicon transistor architecture to fabricate quantum bits, employing the same technology found in smartphones and computer chips. Unlike traditional quantum computing approaches that require large, custom-built facilities consuming megawatts of power, the company's system can be deployed in standard data center racks. This approach reduces cost and space requirements by a factor of 100 and cuts energy consumption by a factor of 1000.

James Palles-Dimmock, the CEO of Quantum Motion, stated, "Quantum computing will only reach its full potential if it's built on a scalable platform, and silicon is the strongest path to achieve this." In 2025, the company deployed the world's first full-stack silicon CMOS quantum computer at the UK's National Quantum Computing Centre and has progressed to Phase B of DARPA's Quantum Benchmarking program.

Founded in 2017 by professors from the University of Oxford and University College London, Quantum Motion has now expanded its operations to Spain and Australia. The company is also deepening its manufacturing partnership with GlobalFoundries. Charlotte Lawrence, Direct Investment Director at the British Business Bank, commented, "We are no longer just at the theoretical stage; we are actively building a quantum computing platform right here in the UK."