Callen-Lenz a UK-based leader in the design, prototyping, development, advanced avionics, systems integration, testing and manufacture of novel Uncrewed Aerial Systems (UAS). Our expertise of platform development ranges from micro-UAS to Medium Altitude Long Endurance (MALE) aircraft exceeding 150kg MTOW, utilising electric, hybrid, internal combustion, and jet engines. Our solutions are interoperable and reliable across diverse mission requirements. Capability proven with over 5,000+ operational hours in austere and contested environments across civil and military domains worldwide.