Harris began his own business in 1974 manufacturing and selling spare parts for classic motorcycles. As the leading British manufacturers such as Norton Motorcycles, BSA and Triumph went out of business, Harris bought as many spare parts as he could and set up L F Harris International Ltd at a warehouse in Newton Abbot. The venture was a success and he expanded by purchasing an engineering company in Leighton Buzzard and a retail shop in Paignton, Devon.
When Triumph's Meriden motorcycle factory closed in, 1983 Harris bid for the rights to the Triumph name and the opportunity to build the Triumph Bonneville T140 with the former Meriden Triumph engineer Brian Jones as well as a number of former personnel from Meriden. Instead, under a renewable five year licence starting from 28 November 1983 granted by the successful bidder, John Bloor, the new owner of Triumph, Harris manufactured 750 cc Bonnevilles until 1988. The announcement of Harris restarting Bonneville production was made on 25 June 1985 at Forde House with local member of parliamentPatrick Nicolls and motorcycling personalities such as Bert Hopwood in attendance. Harris eventually moved to a bigger factory and warehouse and because of these 'Devon' Bonnevilles, Triumph can claim to have been in continuous production of motorcycles since 1902, making Triumph the oldest continuous production motorcycle manufacturer in the world - This is incorrect, as Royal Enfield have been manufacturing uninterrupted since 1901, albeit in different countries. There was no mutual agreement between Harris and Bloor to renew the manufacturing licence. There was a lot of media interest in the venture and Harris was described as the "saviour of the British motorcycle industry". In fact, the Triumphs manufactured by Harris were distinct from Meriden-made models in having significantly more German and Italian component parts as the British motorcycle component industry had shrunk massively by the 1980s.
In 1988 Harris decided not to re-licence the rights to the Triumph and began to design his own version of a motorcycle, the Matchless G80. Fitted with a Rotax 494 cc air-cooled engine, there was also a Harris Matchless G80 built with a twin front disc brake and an electric starter. These were produced until the recession of 1990 when the business returned to producing much sought after spare parts for classic motorcycles. Harris also built eight Matchless G80s for trial with the White Helmets Display Team.
