The number of engines built for the domestic market slumped, though.

British engine exports grew by 13 percent in July, propping up the country's automotive powerplant manufacturing industry.

According to figures from the Society of Motor Manufacturers and Traders (SMMT), which represents car manufacturers and dealers, British factories produced almost 200,000 automotive engines in July - up one percent on July 2017’s figure.

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However, the number of engines built for the domestic market fell from almost 94,000 in July 2017 to just under 83,000 in the seventh month of 2018.

The 11.6 percent tumble was outweighed by growth in exports, though. Around 112,000 engines were destined for foreign markets - an increase of 13 percent on the 99,000 that were sent abroad 12 months previously.

British engine manufacturing plants include Ford’s Dagenham engine facility, in Essex, BMW’s Hams Hall factory, near Birmingham, and the Jaguar Land Rover engine plant near Wolverhampton.

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Mike Hawes, the SMMT’s chief executive, said the figures underlined the need for a free trade with the European Union after Britain leaves the trading block next year.

“It’s good to see previous significant investment into British engine technology and facilities continue to pay dividends, with strong and growing global demand for our high quality, cutting-edge products,” he said. “To ensure future growth, it is critical we maintain the free and frictionless trade we currently enjoy with the EU and other key international markets.”