54 NSC Global

Key points

Revenue: £71.9m (-10%)

Net profit margin: 3.1% Staff: 206

This London-based Cisco and Silver Peak partner bills itself as a provider of communication infrastructures and managed services to corporate clients, working with just 30 global organisations. Although it claims to turn over $240m globally, its UK arm saw revenues roll back 10 per cent to £71.9m in its year to 31 October 2018. Staffing up a large telco's two European network operations centres is among the case studies displayed on its website.