 Simmonds dropped to fourth place in 1970 with improved competition from Dieter Braun (Suzuki), Ángel Nieto (Derbi) and Börje Jansson (Maico) but, still managed to win the Finnish Grand Prix and scored two second place finishes in the Dutch and Belgian Grands Prix.Simmonds finished sixth in the 1971 125cc world championship with one win at the German Grand Prix at the Hockenheimring.In 1971, he competed in the premier 500cc class with a Kawasaki H1R.