Terma Acquires OSL Technology - Powering a Market-Leading Counter-UAS and Critical-Infrastructure Protection Capability

Terma A/S has completed the acquisition of OSL Technology (OSL), a UK-based leader in counter-drone security and safety systems. The acquisition marks a major step in Terma’s strategy to build market-leading capabilities in Counter-Unmanned Aircraft Systems (C-UAS) and critical-infrastructure protection.

OSL is a UK-based counter-drone and intelligent security specialist with its roots in the civil airspace domain, helping major airports and national-infrastructure sites detect, track, and manage drones and other aerial threats in complex environments. Terma brings decades of experience from the defense and security domain, supplying radar and command-and-control solutions to navies, air-defense units, and critical infrastructure operators.

The combined team bridges civil and defense mindsets and practices into a single, end-to-end C-UAS solution that can detect, track, classify, decide, and respond to threats within seconds.

Together, Terma and OSL now combine defense-grade sensors, AI-driven analytics, and real-world operational expertise in an open, modular ecosystem. Integrating Terma’s situational-awareness heritage with OSL’s full-stack counter-drone suite provides continuous coverage and intelligent fusion across sea, air, and land - including third-party sensors and effectors - enabling one trusted operational picture that caters from the tactical to the strategic.

Henriette H. Thygesen, CEO, Terma, said:
“OSL’s operational performance - from years of protecting critical infrastructure at Heathrow and other major sites - shows it delivers where it matters most. Paired with Terma’s multi-domain capacity, built on decades of delivering situational awareness and defense-grade command-and-control, and further informed by partnerships in Ukraine, we now offer one of the most comprehensive C-UAS suites on the market, helping to set a higher standard for protecting people, airspace, and critical infrastructure.”

Henriette H. Thygesen added:
“This is not only about Denmark here and now; it delivers a strong, comprehensive C-UAS solution that can contribute to European flagship projects such as the proposed EU drone initiative.”

For airport authorities, critical-infrastructure operators, and defense customers, the combined offering provides one integrated C-UAS picture - with rapid deployment and immediate operational effect.

Mark Legh-Smith, CEO, OSL, said:
“Joining Terma is an extraordinary opportunity for OSL and our customers. Terma’s multi-domain expertise together with our C-UAS platform and agility create unmatched depth of capability - from sensor to decision to response. It means faster detection, smarter classification, and precisely coordinated action. It’s the perfect combination of innovation and assurance.”

Terma and OSL will serve customers worldwide in C-UAS and critical-infrastructure protection, leveraging OSL’s operational excellence and Terma’s technology base and global reach to deliver fast, reliable, and scalable solutions across civilian and defense sectors.

MW&L Capital Partners acted as exclusive financial advisor. Kromann Reumert acted as legal advisor to Terma, assisted by Addleshaw Goddard acting as local counsel, and Deloitte as tax-advisor.

Cavendish acted as exclusive financial advisor to OSL with Bird & Bird acting as legal advisor.