101 Squadron RAF was disbanded at Filton following its return from France in March 1919 where it had flown the Royal Aircraft Factory F.E.2 as a night bomber squadron. In June 1929 No.
501 (Special Reserve) Squadron RAF was formed at Filton as a day bomber squadron flying Airco DH.9A biplanes. Initially named 'City of Bristol' it was renamed 'County of Gloucester' Squadron in May 1930.