This Dorset manufacturer was founded in 1978 by the former Porsche racing driver Rupert Martin, 69. Dextra now puts as many as 100m LED chips a year in its products and offers bespoke design services and energy-saving control systems for the retail, hospital and education sectors. It has invested more than £12m in its facilities in Dorset since 2014, and has its own delivery fleet. Exports to Europe hit £3.7m in 2017.
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