75. Roc Technologies

Revenue: £57.4m (-18%)

Staff: 321

Founded in 2014 by former 2e2 staff, this BGF-backed IT services firm swapped CEOs in March 2022 as Ian Furness replaced incumbent Matt Franklin (the latter of whom is now focusing on developing the M&A strategy). Project delays in Covid-hit verticals such as aviation, travel and hospitality caused Roc's revenues to fall by nearly a fifth in its year to 31 March 2021 (2022 accounts were imminent as this report went to press). It counts Aruba, Tibco, Dell, Netcall, Citrix, Microsoft, Juniper, Nutanix and Oracle among its vendors.