39. CACI

Key points

Revenue: £99.5m (+6%)

Net profit: 9.7%

Staff: 752

This technology services giant develops a wide array of its own software, but also acts as a channel partner for vendors such as Cisco, Qlick, Check Point and NetApp. Headquartered in Delaware in the US, CACI is a $4.4bn, Fortune 1000 outfit, and its UK business is knocking on the door of £100m revenues following six per cent growth in its year to 30 June 2017. Since its year end it has acquired two UK outfits in the form of Spargonet Consulting and Mapmechanics Software.