This Oxfordshire-based 3D printer and engineering firm has a customer list that includes Airbus and Nasa. It provides precision printheads and nozzles for 3D printers. After developing a passion for 3D printing while working on their graduate teaching course, Dave Lamb, 33, and Sanjay Mortimer, 29, founded E3D Online with Josh Rowley, 28, in 2013. While it designs, builds and ships its products in the small village of Chalgrove, international activities have been driving its growth. Its sales hit £5.8m in the year to April 2018 and exports account for 75% of turnover, with America its largest territory.