en.Wedoany.com Reported - Oxford Quantum Circuits (OQC), a UK-based quantum hardware developer, has completed an oversubscribed £260 million ($350 million) Series C funding round, marking the largest private financing in European quantum computing to date. The round was led by Bullhound Capital, with participation from public and private institutions including the British Business Bank (providing a £100 million anchor commitment), Fynveur (advised by Invus), COFIDES, Mastercard, IHAG, RCM Private Markets Fund (managed by Rokos Capital Management), Alpha Edison, Fulcrum Asset Management, Pentland Ventures, Magdalen College Oxford, Adaptive Capital Partners, Firgun Ventures, 18 West, and Oxford Capital. Existing investors Oxford Science Enterprises, SBI, Chevron Technology Ventures, The University of Tokyo Edge Capital Partners Co., and OTIF Ventures also participated in this round.
The core of OQC's technical architecture involves deploying superconducting quantum processing units (QPUs) directly within multiple commercial data centers. Unlike standard superconducting configurations that require isolated laboratory environments and complex coaxial cabling, OQC employs a proprietary coaxial circuit design that minimizes signal crosstalk and simplifies the wiring topology of multi-qubit registers within cryogenic dilution refrigerators by routing control signals vertically through layered on-chip structures rather than laterally across the chip surface.
The Series C funding will be used to scale production of the company's hardware product portfolio, with a key focus on advancing the OQC TITAN platform. This platform drives the evolution of the company's core superconducting processor architecture toward commercially viable, fault-tolerant operations by enhancing processing speed and system reliability. OQC packages its superconducting processors in standard rack-mount enclosures, enabling distributed deployment across existing sites in the UK, US, Japan, and Spain, allowing quantum accelerators to directly connect with classical high-performance computing (HPC) and AI software environments.
This funding aligns with the UK government's National Quantum Strategy, which includes a £2 billion capital commitment aimed at transforming domestic deep-tech innovations into commercial-scale infrastructure. Amid growing demand from financial and defense institutions for secure, localized data processing, OQC's local co-location framework allows clients to use quantum hardware without routing sensitive data beyond the boundaries of trusted enterprise networks. Targeted capital from early-stage specialist funds, including Firgun Ventures—a quantum venture capital firm led by Zeynep Koruturk and Dr. Kris Naudts, managing a total fund of $250 million—supports the company's international validation phase. By bringing Bullhound Capital's Per Roman onto the board, alongside existing board member and Barclays Chairman Nigel Higgins, the company has restructured and stabilized its capitalization phase to accelerate the construction of a standardized quantum-AI cloud platform for global enterprise networks.
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