Revenue: £51.3m (+11%)
Net profit margin: 3.6% Staff: 231
This acquisitive comms provider continued its push into IT by acquiring Doncaster-based education specialist Advanced Computer Systems for up to £7.5m this April. Results for its year to 31 March 2019 show revenue vaulting 11 per cent to £51.3m, as 2018 acquisitions Shift F7 and ETS Communications fed into its top line. The AIM-listed firm, whose head office is in Tunbridge Wells, now draws 75 per cent of revenues from managed services, up from 70 per cent a year earlier.