The email arrived on a Tuesday, flagged in the subject line as a time-sensitive opportunity. A private equity associate was writing to say they had been tracking a regional accountancy practice for several months and would welcome an introductory call.
The partner who received it deleted it without replying. Twelve months later, three firms in the same regional network had taken PE investment. A fourth was in active conversation. The question had shifted from whether this was relevant to something more pointed: what are these buyers actually after, and is this firm in a strong enough position to engage on its own terms?
What do PE buyers actually look for in a professional services firm?
PE buyers look for professional services firms with recurring, repeatable revenue, documented systems, a diversified client base, and management that extends beyond the founding partner. The Law Practice Exchange describes it directly: they want a business that can withstand the departure of any one individual and grow through capital injection rather than through the founder working harder. That is the entire brief.
The due diligence process focuses on revenue composition. What share of income is recurring versus one-off? How much would leave if the senior partner walked out? How clean is the time recording, WIP management, and profit-by-service-line reporting? These questions tell PE whether the headline turnover is real or founder-assembled. Firms with tidy answers to all three attract a better multiple.
Governance comes next. Stanton Chase’s research on professional services ownership models notes that PE buyers typically introduce corporate board structures, non-partner roles in finance and operations, and faster decision-making. The broad partner committees that characterise traditional partnerships are not something PE wants to maintain post-acquisition.
Named transactions from 2021 illustrate what “attractive” looks like in practice. TowerBrook Capital’s investment in EisnerAmper and New Mountain Capital’s investment in Citrin Cooperman, both documented by Winding River Consulting, involved firms with multiple practice groups, strong recurring compliance revenue, and scalable advisory lines. These deals became reference points for the profession globally.
Why does this matter if you are not planning to sell?
The firms PE finds attractive and the firms that run well without their founders look identical on paper. Recurring revenue, documented workflows, a client base that does not depend on one relationship, and management capable of deciding without checking first: these are the marks of PE-readiness, and they are also what lets a founder step back without the firm losing ground.
This is the relevant angle for many owner-operators in professional services. You may never want PE capital, or the timing may never be right. But Accountancy Europe’s 2025 paper notes that PE interest is already reshaping what buyers of all kinds now expect from professional services firms, influencing valuation benchmarks across the sector. Firms that have done the work attract better terms on any exit or succession route. Firms that have not face heavier discounts across the board.
The Accounting Influencers podcast, citing ICAEW research, reported that approximately 12% of UK accounting firms had already secured PE investment by early 2025. One recurring driver, highlighted in Accountancy Europe’s 2025 analysis, is succession: PE capital addresses the partner pipeline problem that traditional partnership models have struggled with for a decade. Both observations point to the same dynamic: the pressures driving PE interest are the same ones that make any firm harder to run sustainably when the founder is the linchpin.
Where do PE buyers show up in law, accountancy and consulting?
PE enters UK law through Alternative Business Structures, the ownership model the Legal Services Act 2007 created for non-lawyer capital in regulated practices. In accountancy, it targets advisory and tax lines rather than audit, where independence rules constrain what external capital can do. In consulting, it typically backs specialist and mid-tier practices building a platform through bolt-on acquisitions, rather than going after the largest generalist firms first.
For law, the SRA oversees ABS authorisation. Any firm seeking to bring in PE capital must apply for this status, with the regulator assessing the fitness of new owners, governance arrangements, and compliance infrastructure. Consumer legal services and litigation funding platforms are the most common targets. Ropes & Gray, reporting in 2024, noted a strong pipeline of private capital transactions in UK legal services for 2025.
In accountancy, Accountancy Europe’s 2025 paper flags that European regulators are watching PE-owned audit practices carefully, given the tension between PE growth expectations and auditor independence obligations. PE-backed accounting deals frequently address this by separating audit arms into distinct entities, ring-fencing the independence requirements while freeing the advisory, tax and consulting lines for capital-backed growth.
In consulting, the pattern is roll-up. PE backs one specialist or mid-tier firm as a platform, then acquires complementary practices and integrates them under common infrastructure. Niche areas with high-growth recurring revenue, such as cybersecurity compliance and regulatory advisory, have attracted particular interest. Lightyear Capital’s 2021 investment in Schellman, a cybersecurity and compliance assessment firm, is a documented example of this approach.
When does engaging with PE make sense, and when should you be wary?
PE makes sense when you want capital to grow faster than organic profits allow, when succession through partner buy-in is no longer viable, or when you want a partial exit rather than a full sale. It becomes harder when the firm’s value sits largely with you personally, when partners resist performance-driven governance, or when your regulatory history has unresolved issues.
Stanton Chase’s research on professional services ownership makes the cultural mismatch case plainly. Partners used to consensus can find PE’s faster, more centralised decision-making profoundly uncomfortable, and that discomfort translates into attrition and under-realised returns in the years after a deal. If the partner group is not aligned on the shift in culture, PE capital does not fix that.
On the regulatory side, two processes regularly catch buyers and sellers off guard. For law firms, SRA ABS approval needs time and documentation. For any firm conducting regulated financial activities under FCA supervision, whether certain investment advice or insurance mediation, the FCA’s change-of-control approval process, triggered when a buyer acquires 20% or more of voting power, requires prior sign-off. Not building these into the deal timetable creates delays and, in some cases, derails transactions entirely.
There are also structural reasons to stay independent. Rising borrowing costs can make smaller deals less attractive to debt-funded buyers. Some clients, particularly in public sector or regulated industries, prefer firms they regard as genuinely independent. And some professionals will always choose a traditional partnership or boutique over an intensive, KPI-driven environment.
What else should UK owner-operators know about PE in regulated professional services?
PE ownership in UK professional services sits inside a layered regulatory environment that reaches beyond the transaction itself. Law firms need SRA approval of their ABS structure. Accountancy firms with audit arms face auditor independence oversight. Any firm doing regulated financial work faces FCA change-of-control scrutiny. And PE-driven digital expansion, which is standard post-acquisition, brings UK GDPR and cybersecurity obligations that are regularly underestimated.
The NCSC is explicit that law and accountancy firms are high-value ransomware targets. Sensitive client data, financial records, and confidential correspondence make them attractive. PE due diligence teams now include cyber hygiene in pre-deal screening, and firms with documented incidents or weak controls see it reflected in price adjustments. Remediating these issues before a conversation begins puts you in a materially stronger position.
The broader point for a UK owner-operator is practical. PE capital is one route among several open to a professional services firm at transition. Trade sales to larger firms, management buyouts, and internal partner succession are all alternatives. What they share is this: the characteristics PE values are what any serious buyer or successor wants, and they are also what lets you step back with confidence if you choose to keep the business and hand the day-to-day to someone else.
If you run a law, accountancy or consultancy practice in the UK and want to think through what this means for your specific situation, book a conversation.
