Oxford Quantum Circuits (OQC), a UK-based quantum computing scaleup, has secured a $350 million Series C funding round, the largest ever for a private quantum computing company in Europe. The round was announced on June 3 and led by Bullhound Capital, with participation from the British Business Bank and several European investors, marking a significant milestone in the sector.
The Series C round follows a $600 million equity raise by Quantinuum in 2025 and is the fourth quantum computing megaround exceeding $100 million in Europe since the start of 2026. Investors such as Fynveur, Cofides, Fulcrum Asset Management, Pentland Ventures, and Magda also contributed, reflecting sustained confidence in OQC's technology and business model. OQC has deployed quantum systems to partner data centers across Europe, the US, and Asia.
Quantum computing has long been viewed as a niche market dependent on unproven technology, but the recent surge in large funding rounds indicates growing investor belief in its commercial potential. OQC’s successful raise underscores increasing customer interest and the sector’s maturation, as companies aim to deliver tangible business value from quantum technologies in the near future. This funding round surpasses all private European quantum computing investments to date.
OQC’s $350 million Series C round was confirmed on June 3, 2026, positioning the company to expand its quantum computing deployments and accelerate product development across global markets, according to sifted.eu.