Oxford-based startup Alloyed combines digital modeling, metal additive manufacturing, and CNC machining to shorten the development cycle of UAV turbojet engines. Its 300 N-class engine has begun delivery to customers, and the 1100 N-class model is planned for production by the end of 2026. Originally focused on developing aluminum, nickel, niobium, and magnesium alloys for the hot section of jet turbine engines, the company has shifted to manufacturing complete engines, demonstrating the practical value of metal additive manufacturing in rapid iteration and series production of propulsion systems for the low-altitude economy.