AnTech is a specialist drilling services provider and manufacturer that works with oil and gas companies to revitalise old wells, enabling them to avoid new drilling. The Exeter-based firm hit sales of £5.9m in 2019 under managing director Toni Miszewski, 63. Founded in 1992, it took on venture capital in 2013 from Saudi Aramco, one of the world’s most valuable companies, and Calculus Capital to fund its overseas expansion. All its products are manufactured in the UK, with 80% being sold overseas — it has offices in Texas and Saudi Arabia. Its facilities and services have remained operational this year.
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