OSL has been acquired by Terma

November 2025 — OSL Group Limited, a leader in counter-drone security and safety systems, has been acquired by Terma AS, a Denmark-based global provider of mission-critical solutions for defense, aerospace and security.

The acquisition supports Terma’s strategy to build market-leading capabilities in counter-unmanned aircraft systems (C-UAS) and critical infrastructure protection. Together, the combined team aligns civilian and defense best practices into a cross-domain, end-to-end C-UAS solution that can detect, track, classify, decide and engage in seconds.

Founded in 2010, OSL is a leading UK integrator of counter-drone and related drone and security technologies. The company is a trusted supplier to global airports and the UK Ministry of Defense, positioning itself at the forefront of technological development through close collaboration with academia and the successful securing of research and development funding in the UK. OSL maintains strong partnerships across the industry, ranging from leading defense organizations to niche small and mid-sized suppliers. The company also has a longstanding agreement with Heathrow Airport, which has made a multi-million investment in counter-drone technology, as well as a global partnership with Thales, a global leader in air traffic control.

Terma is a global provider of mission-critical solutions for defense, aerospace and security. With more than 2,200 employees worldwide, the group develops cutting-edge technologies that help protect people and assets in complex operational environments.

Our role in the transaction

Oaklins Cavendish, one of Oaklins’ member firms in the UK, acted as the sell-side advisor to OSL in this transaction, working closely with Oaklins Janes Capital, our aerospace, defense and security team in the USA.