Revenue: £44.5m (-6%)
Net profit margin: 6.4% Staff: 231
Having been synonymous with IBM maintenance since its inception in 1987, Bedford-based Blue Chip recently took multi-vendor maintenance in-house, extending its repertoire to include HPE, Dell EMC and Cisco. Costs associated with its investment in a software-defined datacentre caused net profits for its year to 30 September 2018 to tumble from £4m to £2.8m. Revenues slipped by six per cent to £44.5m.