From a Grand Prix History online posting:

His work was displayed in many exhibitions in the UK and twenty four of his paintings were exhibited in New York in 1960. the exhibition was entitled ‘British Motoring Achievements’ and was a collection of paintings depicting outstanding performances of British cars during the previous ten years. These included the Vanwall and Cooper in Grand Prix, Monte Carlo and Alpine Rallies, speed records by MG and Austin, and Le Mans wins by Jaguar and Aston Martin.

Roy Anthony Nockolds was born in Croydon in south London, England on the 24th January 1911. He was the last of seven children; one of his brothers Harold F. L. Nockolds would later become a motoring journalist and author of the classic Rolls-Royce history, “Magic of a Name”. His mother Flora Mary van der Heyden was the great grand daughter of Dutch Baroque-era painter and inventor, Jan van der Heyden. His farther Walter Herbert Nockolds was a descendent of farmers who had originally come to Britain from the Frisian Islands.

To read more: http://www.grandprixhistory.org/nockolds.htm