Avis Drone Labs is The University of Sheffield’s continuing student-led UAV engineering project, designing, manufacturing, and testing aircraft from quadcopters and planes to experimental and research platforms. ADL consolidated Sheffield’s Falcon, Hex, Kestrel, and SunStratos projects; official IMechE results record its 2025 UAS Challenge score across design, development, flight-readiness, pre-mission, flight demonstration, design implementation, conduct, and business-case categories. No 2026 result, award, or autonomous mission success is claimed.