Most of original aircraft team, including Bolas, were gathered 1920 to form George Parnall & Co. Ltd, Park Row, Bristol, with works and airfield nearby at Yate. There followed remarkable demonstration of survival without production, Parnall producing prototypes of 18 different designs including civil and military biplanes and monoplanes, landplanes and flying-boats with engines from 20 to 1,000 hp.