With virtually all resources required for the war effort, Thomas nonetheless approved the development of a new small family car that would replace the Morris Eight. Although Oak (and Morris's technical director, Sidney Smith) were in overall charge of the project, Issigonis was ultimately responsible for the design, working with only two other draughtsmen. Thomas named the project 'Mosquito' and ensured that it remained as secret as possible, both from the Ministry of Supply and from company founder William Morris (Lord Nuffield), who was still chairman of Morris Motors, and as widely expected, would not look favourably on Issigonis' radical ideas.