41. Onnec

Revenue: £97.7m (+9%)

Staff: 725

Having acquired Swedish peer Load Services in May 2022, this cabling, networking and smart buildings specialist rebranded from ExcelRedstone to Onnec two months later. Commscope's reigning EMEA partner of the year, Onnec claims to employ almost 800 full-time employees across EMEA, US and APAC. After declining by nearly a quarter the previous year, its calendar 2021 revenues rebounded nine per cent to £97.7m. The UK generated two-thirds of the total.