44. Node4

Revenue: £93.3m (+34.4%)

Staff: N/A

Node4 was another MSP that saw substantial revenue growth in its most recent reporting year, off the back of organic expansion and buyouts.

Though the firm will not return dividends to shareholders this year, it is heavily reinvesting in M&A expansion and the addition of new services.

The Derby-based firm has made no less than ten acquisitions in the past decade and shows no signs of slowing down.

Its most recent purchase, information security and technology risk specialist ThreeTwoFour, joined the Node4 stable last July.

The aim was to add a consulting-focused offer, according to Mark Cox, director of M&A at Node4.

Going forward, the firm is shifting its M&A strategy to focus on strategic buyouts, rather than sheer scale.

"It's more about is it complementary? Does it give us access to a different market? Does it add a technology area that we see as an opportunity or want to enhance what we're doing? Or it might be a skill set of people, managing director Paul Bryce told CRN in September.

In 2022, the MSP bought out Microsoft business application partner Tisski and Azure specialist risual.

But the firm's acquisitions extend beyond other MSPs. Node4 also owns datacentres in Derby near its head office, which underpin a lot of its infrastructure services and has completed expansion projects at two sites in recent years.