Welcome to J & M Turners At the end of February 1994, J & M Turners were appointed by Yamaha Motor UK as ATV agents for Gloucestershire. Many years later, the company, as well as its relationship with Yamaha, has grown from strength to strength to become one of the largest Yamaha ATV dealerships in the UK, supplying both sports and utility ATVs. Equally, in the same year as signing with Yamaha, Turners also became appointed agents for Logic Equipment