After the war, airmen of the Airframe and Engine trades continued to train at St Athan, but in 1955 this training dispersed to RAF Kirkham and RAF Weeton. 4SofTT then became a Boy Entrant School, with new recruits being trained in engine and airframe mechanics, and armament, electrical and instrument mechanics. It was at this time that approval was given by the Airforce Board of the Defence Council for the formation of 2300 Sqn ATC. Following the demise of the Boy Entrant scheme in 1965, airman training returned to St Athan for the vehicle and general and Airframe, Engine aircraft maintenance trades.