Revenue: £63.3m (+13%)
Net profit margin: 1.9% Staff: 331
Quick-fire purchases of AWS partner Attenda and Azure specialist Inframon in 2016 and 2017 have transformed this global MSP into a sizeable UK player. Revenues bounced 13 per cent to £63.3m in its year to 31 December 2018 as additional mainframe sales resulting from its March 2018 acquisition of a unit of Wipro bolstered its top line. Net profits fell sharply to £1.2m, which it blamed on its investment in sales and product development.