OQC Raises £260 Million in Europe’s Largest-Ever Private Quantum Computing Funding Round

OQC, developing enterprise-ready quantum solutions, led by Gerald Mullally, Dr Peter Leek, and the team, has closed an oversubscribed £260 million ($350m) Series C funding round, Europe’s largest-ever private funding round for a quantum computing company. Bullhound Capital led the round, which included investment from the British Business Bank, Fynveur (advised by Invus), COFIDES, RCM Private Markets Fund managed by Rokos Capital Management (US) LP, Alpha Edison, Fulcrum Asset Management, Pentland Ventures, Magdalen College Oxford, Adaptive Capital Partners, Firgun Ventures, 18 West and Oxford Capital. Existing investors including Oxford Science Enterprises, SBI, Chevron Technology Ventures, The University of Tokyo Edge Capital Partners Co., and OTIF Ventures also participated, reflecting continued support for OQC’s technology roadmap and international expansion. J.P. Morgan acted as exclusive placement agent on the transaction.

Strengthening Global Quantum Computing Expansion.

The investment positions OQC among the best-capitalized private quantum computing companies globally, providing resources to expand the deployment of its systems across strategic international markets.

The funding also reflects increasing confidence in the commercialization of quantum computing technologies and highlights the growing ability of the UK’s deep-tech ecosystem to build and scale globally competitive technology companies.

Building Quantum Infrastructure for Enterprise and Government.

Founded in the UK, OQC develops superconducting quantum computers designed for deployment within data-center environments serving enterprise and government customers. The company has established an international footprint across Europe, North America, and Asia, with systems operating in the UK, US, Japan, and Spain.

Growing interest from organizations in financial services, defense, and security is driving demand for scalable quantum infrastructure capable of addressing computational challenges beyond the reach of conventional systems. The new funding will support OQC’s expansion in key markets while accelerating development toward commercially useful, fault-tolerant quantum computing.

According to Gerald Mullally, the investment reflects both the growing maturity of the UK’s quantum computing sector and a broader industry shift toward commercial deployment. The funding will support OQC’s international expansion, accelerate progress toward more advanced quantum systems, and help meet increasing demand from organizations seeking secure and scalable access to quantum computing infrastructure.

According to Peter Leek, OQC’s approach centers on developing quantum computing systems built around scalable quantum circuit architectures and practical engineering principles. The new investment will support efforts to improve system performance and reliability while continuing to integrate quantum computers into the trusted data-center infrastructure used by enterprise and government customers.

Broad Support for OQC’s Next Phase of Growth.

The funding round has been widely described as a significant milestone for both OQC and the UK quantum computing sector. Investors, industry leaders, and government officials highlighted the company's progress in translating quantum research into commercially deployable infrastructure and its growing role in the global quantum ecosystem.

Supporters noted that the financing will help OQC accelerate international expansion, advance its technology roadmap, and scale deployment of quantum systems for enterprise and government customers. The round also underscores broader confidence in the UK's ability to build globally competitive deep-tech companies and strengthen its position in the emerging quantum computing industry.

Positioned at the Forefront of the Quantum Computing Race.

OQC’s growth aligns with the UK government’s broader ambition to establish global leadership in quantum technologies and advanced computing. The company’s ability to attract significant international investment reinforces the UK's position as a leading destination for building and scaling frontier technology businesses.

The funding announcement, highlighted during London Tech Week, placed OQC at the center of discussions around the future of quantum computing and next-generation infrastructure. As the industry moves toward commercialization, the company is positioning itself as a key player in a market expected to transform sectors ranging from financial services and healthcare to defense and national security.