Air Marshal Sir Hugh Dowding inspects workshops at Halton School of Technical Training for Aircraft Apprentices . The passing - out inspection of aircraft apprentices at No 1 School of Technical Training ( apprentices ) , Halton , was made by Air Marshal Sir Hugh Dowding . KCB , CMG , Air Member of Council for Supply and Research . Photo shows ; Air Marshal Sir Hugh Dowding inspecting the workshops and work done by aircraft apprentices . 19 December 1933