locomotive built by Clayton. After
World War II, Clayton Equipment Ltd experienced significant growth as it acted as a subcontractor of
International Combustion, constructing various products such as farming equipment and industrial conveyors in response to a post-War shortage. The expansion necessitated the acquisition of new premises Record Works in
Hatton,
Derbyshire, and in 1957, Clayton Equipment was acquired by
International Combustion Ltd. British Railways, as part of its dieselisation scheme, contracted Clayton Equipment Ltd to supply eighty-eight
diesel-electric locomotives (what would later be known as the
Class 17), and other orders were fulfilled for international customers from nations as diverse as
Australia,
Korea,
Cuba and
Poland. A £5 million contract by
British Railways for 88 mainline diesel electric locomotives followed during the same year, supplemented by 1.75 million order for ten models that were exported to
Cuba was obtained whilst, at the time, the company sales, particularly of mining and tunnelling locomotives, which were primarily for the export market, also continued to rise. The Cuban locomotives were based on the
Brush Type 4 locomotives also been built at the same time. In 1962, a decision was made by the
National Coal Board (NCB) that all
pit ponies were to be removed from mines in the
United Kingdom. The NCB expressed an interest in using small locomotives to help remove material from their pits. Clayton Equipment supplied a number of these machines which were put into service, before being asked to develop a locomotive that could negotiate steeper
gradients. Ten years later, Northern Engineering Industries (NEI) was acquired by
Rolls-Royce as part of a strategy to diversify its product line into industrial power, and Clayton Equipment became a part of the Rolls-Royce Industrial Power Group in 1989. In 1994 Rolls-Royce plc divested itself of the remaining companies within the Northern Engineering Industries Mining Equipment Group, retaining only Clayton Equipment. Consequently, the company was put under the control of Rolls-Royce Materials Handling based at
Gateshead and then later Rolls-Royce Industrial Businesses in
Derby. It nonetheless retained a significant measure of autonomy, and in March 2005, it became an independent company again. However, in January 2026, the firm and its assets were acquired by engineering company
Clarke Chapman. ==Operations==