8. Zenzero Solutions

Revenue growth: +79%
Revenue: £66.8m
Oxygen 250 ranking: 76
Continued organic growth, along with its purchases of Neuways, Exmos and Quostar, fuelled a 79% top-line hop at this acquisitive, Coventry-based MSP in its year to 31 March 2025.
Recurring revenues fell from 78% to 75% of the total.
The Macquarie-backed Microsoft and Dell partner has made at least another three acquisitions since year end, including a £33.3m purchase of an unnamed Poole-based cyber specialist.
Oxygen ice-breaker:
Zenzero has a policy of not immediately disclosing the identity of its acquisitions, labelling its post year-end conquests simply ‘Acquisition A’, ‘Acquisition B’ and ‘Acquisition C’.
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