He completed a four year mechanical engineering course at night school before joining ICI as a cadet draughtsman, giving him a wide range of work experience including mould design, pattern design, metal spinning and various mechanical engineering designs.
John travelled to England where he worked for four months with Sir Alexander Gibbs and partners on a highway design linking the M1 to the M4.
Back in New Zealand he was design engineer for Rowe Engineering, designing off-road equipment and heavy machinery. In 1976, he built glass kilns and went into business as a fine artist designing and making hand-made glass lighting, later joining the family property management and development business.
John worked on motorcycle design for some years, developing innovative methods using composite materials and performance engine designs. He created the Britten Motorcycle Company in 1992 to produce revolutionary machines to his own design made of light materials and using engines he built himself, which became famous around the world.
His Britten motorcycles won races and set numerous speed records on the international circuits, and astounded the motorcycle world in 1991 when they came a remarkable 2nd and 3rd against the factory machines in the Battle of the Twins at Daytona USA.
New Zealand mourned in 1995 when John died aged 45 after a brief illness related to cancer.