30. CAE Technology Services

Revenue: £119.6m (-11%)

Staff: 305

Pandemic-related delays to infrastructure projects underpinned an 11 per cent revenue dip at this Cisco, Dell and Microsoft partner in its year to 30 June 2021. Its net profits improved from £2.3m to £3m, however, as it moved to cut costs. The Hemel Hempstead-based IT infrastructure specialist launched a new inhouse software development practice, CAE Labs, in November 2022. It counts Oxford University, Cazoo and NHS Wales among its big-name customers.