Revenue: £542m (+38%)
Net profit margin: 3.6% Staff: 1,865
This technology and network services giant bagged a monster £100m deal in March to provide the IT and comms infrastructure to Hinkley Point C, the first nuclear power plant to be built in the UK in 25 years.
Warwick-based Telent's total revenue rocketed 38 per cent to £542m in its year to 31 March 2019 as its move to assume full control of a joint venture with fallen outsourcer Carillion bolstered its top line. Its Network Services arm reported rising demand for on-premise and cloud-based networking, compute and storage projects.