Denis Sargent Jenkinson (11 December 1920 – 29 November 1996), "Jenks" or "DSJ" as he was known in the pages of Motor Sport, was a British journalist deeply involved in motorsports.

Jenkinson has constructed himself a very nice motor-bicycle of Norton parts, with taper forks, much of the work being accomplished by torch-light in a small shed.

Jenkinson rarely wrote about his personal life but mentioned how he would pick up Mike Hawthorn, living nearby, who would ride it with Jenks as passenger.

He spent his summers touring Europe and his winters in a succession of 'digs' in England; Jenks eventually settled near Crondall in Hampshire in a tiny run-down house with no mains electricity or water, largely full of his archives and of parts of vehicles he was 'fettling'.

He became accepted as the 'elder statesman' of British racing journalists due to his closeness to the teams and drivers, his conversational writing style and his obvious and enduring passion for the sport.

[3] He later adopted an E-Type Jaguar as his work transport, although at home he had assorted decrepit vehicles including an elderly Mercedes-Benz saloon, a Citroën 2CV and others.

Jenkinson and Moss together went on to beat the five time Formula One World Champion Juan Manuel Fangio to win the race by 32 minutes, in a Mercedes 300 SLR.

As well as his journalism, Jenkinson went on to write several other motorsports books about Porsche, Frazer Nash, the Jaguar E-type, the 2.5-litre Formula One, Juan Manuel Fangio, the Schlumpf Collection and a particular Maserati.

[4] On 14 September 1963 he rode his NorBSA motorcycle, a BSA Gold Star 500 cc engine in a modified and lowered Norton frame, at the Brighton Speed Trials.