Delta.g, a UK-based quantum technology company, has raised £4.6 million in an oversubscribed seed round to accelerate the development and deployment of its gravity sensing platform. The round was led by Serendipity Capital with participation from NSSIF, and existing investor SCVC.
Quantum sensing has emerged as one of the first quantum technologies with the greatest potential to deliver immediate real-world impact, enabling breakthrough advances in subsurface imaging, navigation, and environmental monitoring. Yet across infrastructure, energy, and defence, access to high-resolution spatial data remains limited. Without reliable spatial intelligence, organisations are forced to operate with incomplete information, driving up risk, cost, and delays. Delta.g’s platform directly tackles these gaps, delivering quantum sensors that offer a step-change in precision, portability, and reliability over existing technologies. Spun out of the University of Birmingham, Delta.g’s technology was developed at the UK Quantum Technology hub for Sensors and Timing. The proprietary technology, engineered for real-world conditions and early trials is now owned by Delta.g and has shown its value across infrastructure, transportation, and dual-use cases.
Spatial intelligence is becoming a critical layer of 21st-century decision-making. From detecting sinkholes to mapping old mine workings and enabling GPS-free navigation, reliable gravity-based data gives governments and industries the ability to anticipate risks and plan with confidence. Today’s tools often deliver patchy or misleading results. The consequences can be costly: in the UK alone, poor subsurface data results in billions of pounds in annual losses across infrastructure and utilities, while resilience gaps leave sectors such as defence and energy vulnerable to avoidable risk.
With the capital, Delta.g will expand its technical team and manufacturing capacity, deliver field systems through pilot deployments across key government and commercial partners, and advance its data and analytics platform to integrate quantum-grade geospatial insights into decision-making at scale, creating the “Google Maps” for the subsurface.
