In the facilities management sector, consolidation is no longer a trend. It is a structural reality. Businesses are combining across borders, acquiring local specialists and attempting to build the kind of integrated, multi-service platforms that large corporate and public sector clients increasingly demand. The M&A activity is visible and well documented. What is less visible, and far more consequential for long-term value creation, is what happens after the deal closes.
Gary McGaghey has spent much of his executive career in that less visible space. As Group CFO of OCS, the global integrated facilities management business backed by Clayton Dubilier and Rice, he is currently overseeing the integration of two substantial acquisitions into a group that, post the integration of the originally acquired and successfully merged business, now operates across multiple continents and multiple service lines. Before OCS, he led the finance function at Williams Lea Tag through one of the most operationally complex carve-outs in the digital marketing services sector. His perspective on integration, what it demands, where it fails and how it creates genuine competitive advantage, has been shaped by direct experience rather than theory.
Where Integration Goes Wrong
The most common integration failure, in McGaghey’s experience, is not technical. It is not a failed ERP migration or a mishandled legal entity consolidation, though those things happen. The most common failure is what he identifies as the planning trap: an organisational preoccupation with integration process at the expense of integration outcomes.
Businesses invest heavily in governance structures, workstream frameworks and project management offices. They produce detailed integration plans and comprehensive status reports. And then, twelve months in, they discover that the synergies are behind schedule, the key talent has started to leave and the clients of the acquired business are beginning to ask questions.
The antidote, in McGaghey’s view, is ruthless focus on a small number of leading indicators that tell the truth about whether integration is actually working. Cash conversion. Working capital trends. Revenue retention in the acquired business. Overhead cost ratios. These metrics cannot be dressed up with narrative. They either confirm that the integration is delivering or they surface the problems that need to be addressed. The CFO who insists on this kind of financial transparency, even when the picture is uncomfortable, is providing the integration programme with something it desperately needs: an honest signal.
The Cash Complexity of Integration
Every integration creates a temporary deterioration in cash flow. Systems harmonisation disrupts billing processes. Supplier renegotiations create payment term uncertainty. Customer migrations introduce friction into revenue collection. In the short term, the operational improvements that justified the acquisition may be invisible in the cash numbers, while the costs and disruptions are highly visible.
This is the period in which the CFO’s credibility with investors and banking partners is most tested and most valuable. The CFO who has anticipated the cash flow implications of integration, built a granular rolling forecast and established clear daily and weekly liquidity reporting is able to manage through this period with transparency rather than anxiety. The CFO who has not done that groundwork is in a much more difficult position when a covenant test approaches or a banking partner asks for an explanation.
McGaghey’s experience at Williams Lea Tag offers a useful case study. The carve-out from the former parent required establishing entirely new banking relationships across multiple jurisdictions, migrating cash pools from the parent’s treasury infrastructure and implementing new payment controls globally, all while maintaining normal business operations. The lesson he draws from that experience is straightforward: treasury capability and key business process capabilities across order to cash and procure to pay, all need to be invested in before the transaction closes, not after the problems appear.
At OCS, this principle is embedded in how the integration of recent acquisitions is being managed. Operating cash flow, free cash flow and working capital is tracked at a granular level. Covenant headroom is monitored continuously. Integration costs, significant in any programme of this scale, are subject to the same planning and approval discipline as operational expenditure. For the investors and banking partners who rely on that financial reporting, consistency and transparency are not simply desirable. They are the basis on which the relationship is built.
The Part of Integration Nobody Plans For
There is a dimension of post-merger integration that appears in relatively few project plans and receives relatively little attention in CFO forums: the cultural work.
Financial integration is measurable. System consolidation has defined milestones. Headcount rationalisation produces a number. But the process by which two organisations develop a shared identity, a genuine sense of common purpose, shared values and mutual trust, resists easy quantification. It also, in McGaghey’s experience, determines more of the long-term outcome than most integration frameworks acknowledge.
The integrations that underperform are rarely those where the systems failed or the synergy model was wrong. They are the ones where the talent started leaving six months in, where the clients of the acquired business felt that the relationship had changed in ways they did not like, and where the management team of the acquired organisation gradually disengaged because they felt that what made their business distinctive was being erased rather than respected.
McGaghey’s response to this challenge is grounded in what he describes as a high-EQ approach to financial leadership. In practice, this means finance leaders who are genuinely present across the organisation, not just in board meetings and budget reviews, but in the operational conversations where cultural integration actually happens. It means listening to the acquired organisation’s leadership with genuine curiosity rather than simply directing them toward the acquirer’s ways of working. And it means protecting, wherever possible, the local expertise, capabilities and client relationships that justified the acquisition multiple.
This is not a soft approach. It is a pragmatic one. Organisations that trust their finance leadership surface problems earlier, make decisions faster and retain more of the talent and the “secret sauce” of the acquired business that drives value. The EQ investment pays a financial return.
Building the Integration Finance Team
The quality and capacity of the finance team is a determinant of integration success that is frequently underestimated in transaction planning. Due diligence focuses on the target’s financial profile. Management assessment focuses on commercial leadership. The question of whether the acquiring company’s finance function is actually capable of absorbing the complexity of integration, at pace, under pressure and across multiple workstreams simultaneously, receives less scrutiny than it deserves.
McGaghey’s approach to building integration-capable finance teams is built around three requirements: deep technical capability in the areas of systems migration, management reporting and financial controls; strong commercial understanding of the businesses being integrated and the data set required to performance manage the business; and the interpersonal range to operate across cultural and organisational boundaries that did not exist before the transaction.
He stresses that capability and capacity go hand in hand. As a critical leader of the integration program, the CFO needs to identify gaps or weaknesses up front and address them quickly, either through backfilling or upskilling the team or through injecting external expertise support.
He also places significant emphasis on transparency with the team itself. Integration is demanding work. The timelines are long, the pressures are real, and the sense of progress can be elusive in the middle stages of a complex programme. Finance leaders who communicate clearly about the context, the priorities and the timeline, who treat their team as participants in the mission rather than executors of a plan, build the resilience that sustains performance through the difficult periods every integration inevitably produces.
Integration as Platform
In industries undergoing structural consolidation, the ability to integrate well is not merely an operational competency. It is a strategic asset.
A business that has demonstrated, across multiple transactions, that it can absorb acquisitions, extract synergies and retain the talent and client relationships of the businesses it acquires is a fundamentally more attractive platform for continued M&A than one that has treated integration as a necessary inconvenience. Furthermore, a well executed integration provides the foundation for ongoing AI enabled efficiencies delivery, providing value creation well beyond the initial synergy delivery. PE investors looking to build sector-leading platforms understand this. Banks pricing acquisition financing understand this. And the management teams of potential acquisition targets understand it too.
This is the context in which McGaghey’s work at OCS sits. The integration programme currently underway is not simply about realising the value of specific transactions. It is about demonstrating, to investors, to the market and to potential future partners, that OCS has the operational infrastructure and leadership depth to continue growing through acquisition and ongoing AI enabled efficiencies, in a sector that rewards scale as an enabler of cost effective service quality and innovation.
For Gary McGaghey, that is what makes integration the hidden engine of growth: not just in individual transactions, but across the arc of a business’s development. The discipline, the cash rigour, the cultural investment and the team quality that effective integration demands are precisely the characteristics that define a business capable of sustained, compounding value creation. The deal creates the opportunity. The integration is where the value is actually built.
