In 1977 Clay Regazzoni raced for Ensign, scoring five points with best finishes of fifth in Italy and America. In 1978 the team entered cars for Danny Ongais and Lamberto Leoni, but Ongais left after two races and Leoni after four races. Jacky Ickx contested the next four races and Derek Daly raced the rest of the season scoring a point in Canada. Also in 1978 Nelson Piquet made his debut in Formula 1 at the German Grand Prix at the Hockenheimring driving an Ensign. In 1979 Daly stayed with Ensign but he left after the Monaco Grand Prix and was replaced by Patrick Gaillard. Gaillard only qualified at two out of five races and was replaced by Marc Surer for the final three races of the season.