Founded in 2007, Callen-Lenz is a leading Uncrewed Aerial Systems (UAS) design and development company, delivering versatile, next-generation solutions. With deep industry expertise and a focus on innovation, safety, and operational excellence, we design payload-agnostic, open architecture platforms tailored to diverse mission needs. From micro-UAS to Medium Altitude Long Endurance (MALE) aircraft, our multidisciplinary team develops, integrates, and tests advanced avionics, sensors, and payloads ensuring rapid adoption of new technologies and high operational readiness.
Our platforms
Koios
|
Wingspan |
4m |
|---|---|
| Launch | Fully autonomous Vertical Take-Off and Landing (VTOL) |
| Endurance | 6-8 hours |
| Maximum Take-Off Weight (MTOW) | 35kg |
| Payload capacity | 7kg (including fuel) |
| Datalink range | 190km |
| Mission management | SC3 |
| Deployment | Box to launch in 10 minutes |
| Crew | 2 (pilot and payload operator) |
| Training | 5 days |
Fregata
|
Wingspan |
4m |
|---|---|
| Launch | Pneumatic catapult launch and skid landing |
| Endurance | 8-12 hours |
| Maximum Take-Off Weight (MTOW) | 35kg |
| Payload capacity | 12kg (including fuel) |
| Datalink range | 190km |
| Mission management | SC3 |
| Deployment | Box to launch in 10 minutes |
| Crew | 3 (pilot, launch commander, and catapult loader) |
| Training | 5 days |
Government
We are a key supplier and advisor to UK government across the UAS industry since 2012 and are recognised as a key integrator and subject matter expert in the UAS ecosystem.
Academia
We work closely with several higher education establishments providing consultancy, knowledge transfer, career and development opportunities to support the future of engineering.
Flying the flag for technology
Based in rural Wiltshire, Callen-Lenz is transforming the local area into a hub of cutting-edge innovation, providing opportunities across a wide range of disciplines in our local community.
Platforms
We are specialists in the rapid development of platforms including multi-rotor, fixed-wing, electric, hybrid, internal combustion and jet. We develop platforms to perform in a variety of highly contested and challenging environments based on operational experience alongside our civil and defence partners.
Koios
Products
Our multi-disciplinary teams provide OEM avionics system design, payload integration, and support across the aerospace domain, including autopilots, flight control systems, platform management computers, and ground control stations. This capability enables us to rapidly adopt new technologies while remaining cyber secure.
Technical services
We have extensive knowledge and credible experience across crewed and uncrewed aircraft design, development, manufacture, production, delivery, test and evaluation and regulatory compliance. We offer our customers unbiased advice and support to optimise programmes, reduce risk and deliver pioneering technical solutions.
Platform development
Operational services
We have a history of delivering reliable, repeatable, international UAS operations since 2008. The rapid evolution of UAS capabilities and integrations is often best exploited as a ‘capability as a service’. To help clients achieve mission success, we offer planning, commissioning and execution of operational services in challenging environments globally.
I’m delighted that we have been successfully awarded a RAeS Bronze Medal for our joint work on Crewed Uncrewed Teaming. Many thanks for your support with this work and the associated submission. Congratulations to the Callen-Lenz colleagues who worked collaboratively with the Leonardo engineers to deliver the successful CUC-T demonstration for AWE-19.
Andy MerrickLeonardo
Callen-Lenz have used UK DSE’s Export Support Team to showcase their KOIOS on numerous defence events, both in the domestic and international spheres. It always attracts a lot of interest in the export market. In addition, UK Defence Attachés with global reach have received an introduction to the capability with open arms. The unique design and obvious utility of the system makes it a real eye catcher at these events drawing in the crowds including Government Ministers and International Military Delegations.
WO2 Dave CreeArtillery UAS Advisor, Export Support Team