Oxford Quantum Circuits closes £260M ($350M) Series C, described as Europe's largest private quantum round, to scale superconducting hardware
On 2026-06-03 Oxford Quantum Circuits (OQC) announced the closing of an oversubscribed £260 million ($350 million) Series C, which the company and multiple Tier-1 trade outlets describe as the largest private funding round for a European quantum-computing company. Per OQC's newsroom release the round was led by Bullhound Capital, with J.P. Morgan acting as exclusive placement agent, and named participants British Business Bank, Fynveur (advised by Invus), COFIDES, the 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, Oxford Capital, Oxford Science Enterprises, SBI, Chevron Technology Ventures, The University of Tokyo Edge Capital Partners (UTEC), and OTIF Ventures. OQC stated the capital will expand its operational presence in priority markets — with named focus on finance, defense, and security customers — and accelerate its roadmap toward commercially useful, fault-tolerant superconducting quantum computers, including development of the OQC TITAN platform. The round was surfaced via Tier-1 trade press and the EODHD news feed and logged in today's (2026-06-06) wrapper as a late-discovered event within the trailing 10-day window; daily-wrapper immutability for 2026-06-03 is preserved.
A £260 million (~$350 million) Series C for an established superconducting-hardware company sits at the top of the §8.2 score-8 band for a hardware-startup Series B/C ($150–500M), and is, per OQC and Tier-1 trade coverage, the largest private quantum-computing round in European history — concentrating institutional, sovereign-linked (British Business Bank, COFIDES) and corporate-strategic (Chevron Technology Ventures, SBI) capital behind a single European superconducting roadmap. The score is held at 8 rather than 9 because the raise, while large, remains below the ~$500M pure-play financing magnitude that anchors the score-9 band.
The round re-capitalizes the strongest UK-based superconducting pure-play and signals continued European appetite to fund a sovereign quantum-hardware stack alongside the silicon-spin (Quobly, Quantum Motion) and neutral-atom approaches funded earlier in 2026. J.P. Morgan's role as exclusive placement agent and the finance/defense/security go-to-market focus point OQC toward data-center-deployed, regulated-sector deployments rather than a near-term public listing. Execution risk centers on whether the superconducting TITAN roadmap can convert this capital into the fault-tolerance milestones better-capitalized US peers (IBM, Google) are targeting on similar timelines.