20 Works Group Royal Engineers (Air Support) is a highly specialized unit within the Corps of Royal Engineers dedicated to delivering technical infrastructure solutions for British military air power. Based at RAF Wittering, the group is unique in that it integrates Army engineers directly into the Royal Air Force's A4 Force (Logistics and Engineering) structure. Their primary mission is the design, construction, assessment, and maintenance of critical airfield infrastructure—ranging from runways and taxiways to hangars and fuel installations—in both established bases and austere operational environments. The group commands several Specialist Teams Royal Engineers (STREs), such as 529 STRE (Air Support), which provide expert consultancy on pavement engineering and materials, ensuring that aircraft can launch and recover safely wherever the mission requires.
