Career
The victory marked the first world championship for Kawasaki. In 1972, while attending a non-championship race at Rungis near Paris, Simmonds was killed in a fire caused by an exploding gas cylinder in a caravan. Points system from 1950 to 1968:
Points system from 1969 onwards:
(key) (Races in bold indicate pole position.
Races in italics indicate fastest lap).