Growing up in Fair Oak, Hampshire, England, Noyce was encouraged by his father to start riding motorcycles at the age of 6.

[1] Noyce left Wyvern County Secondary School at the age of 15 to become an apprentice tool maker for the Rickman brothers, noted British motorcycle frame builders.

[2] He moved up to the premier 500cc class in 1976 and won his first Grand Prix race at the British motocross Grand Prix and finished the season ranked a respectable 4th place in the final world championship standings.

500cc motocross world championship by defeating a strong field of riders that included his Honda teammate, André Malherbe, as well as Roger De Coster and Gerrit Wolsink riding for Suzuki, Brad Lackey with Kawasaki and Heikki Mikkola with Yamaha.

[8][9][10] He became the first British rider to win a 500cc motocross world championship since Jeff Smith won the title in 1965.