43. Redcentric

Revenue: £93.3m (+2%)

Staff: 486

A trio of acquisitions made last summer has turbo-charged this AIM-listed midmarket MSP's runrate revenues from £90m to £150m, its CEO Peter Brotherton said in December in its 2022 interim results as he branded the previous six months a "transformational period for the business". This includes the assets it snapped up from fallen datacentre provider Sungard. Redcentric generated a £23.7m adjusted EBITDA on revenues of £93.3m in its most recent full-year period, ending 31 March 2022 (with both figures roughly flat year on year).