This Aberdeen business offers pipeline repair and testing services to the oil and gas industry. Established by chairman Peter Duguid, 55, and his sister Lorraine Porter, 60, in 1998, the company is now run by chief executive Leigh Howarth, 55. It has bases in North America, the Middle East and Malaysia, with overseas customers accounting for 80% of £43.4m sales in 2018, when profits hit £4.5m. In March, it announced a major expansion in Oman, after restricting all non-essential travel to its pipeline projects.