Oxford Quantum Circuits (OQC), the UK-based scaleup building and deploying quantum computers, has raised a £260m ($350m) Series C. The raise marks the biggest ever funding round ever by a private quantum computing company in Europe, following a $600m equity raise bagged by UK- and US-based Quantinuum in 2025. The Series C is the fourth megaround ($100m+) raised by a quantum computing company in Europe since the start of the year, already surpassing three that were announced across all of 2025, and reflecting sustained investor interest in the sector. Quantum computing is maturing, after long being considered a niche market relying on a yet-to-be-proven technology. Companies in the space are now promising to unlock business value in the coming years, attracting more customer interest and plenty of investor money.

Full report : Oxford Quantum Circuits, a UK-based startup building and deploying quantum computers, has raised a $350 million Series C led by Bullhound Capital.

For more see the OODA Company Profile on Oxford Quantum Circuits.