Selling an accountancy firm in the UK

You are a partner or equity-holder in a UK accountancy firm worth between £5M and £50M in enterprise value. A full-service firm with a mix of audit, tax, advisory and outsourced finance work. A specialist tax practice (transaction tax, private client, international tax). A specialist audit firm. An outsourced finance / virtual CFO platform. Most likely between two and twelve equity partners, a senior management layer behind that, and 50 to 250 fee earners.

The accountancy M&A market in the UK has been one of the most active professional services sub-sectors in recent years. PE-backed consolidators have driven a meaningful re-rating of multiples and have widened the buyer pool well beyond the traditional accountancy-to-accountancy merger. Strategic firms expanding by capability or geography form a second pool. A smaller number of overseas firms entering or expanding in the UK form a third.

We engage 12 to 24 months before a target exit. The longer window matters in accountancy specifically because partnership alignment work — agreeing objectives, vesting, proceeds split, lock-ins and post-sale roles — takes time. Firms that go to market without alignment consistently stall at the negotiation phase.

This is not the right fit if your firm is below £5M EV. It is also not the right fit if the partner group is not yet aligned on whether to run a process at all. In the latter case we are happy to spend an exploratory conversation helping the partner group reach a position rather than taking a mandate that is not ready to deliver against.

Buyer diligence in UK accountancy firm M&A focuses on five items. Each is fixable in advance, and each consistently drives the difference between top-of-range and median outcomes.

Recurring fee mix first. Audit work, retainer advisory, ongoing outsourced finance, and other contracted/recurring fee streams trade at a premium to pure transactional revenue. PE consolidators in particular pay materially differently for a firm at 70% recurring fees versus 30%. Pre-process work to surface and properly classify the recurring component is one of the highest-return preparation activities — most owner-managed firms understate it because the categorisation has never been done sharply.

Partner alignment second. The single most material factor in any partner-led firm transaction. Where equity is distributed across the partner group, alignment on objectives, vesting schedules, post-sale roles, lock-ins and proceeds split needs to be reached before going to market. Buyers diligence partner-level fee origination data carefully. We work with partner groups to document this honestly.

Client concentration and retention third. Buyers want to see that the top 20 clients are spread across multiple partners, that no client represents more than 10-15% of revenue, and that client tenure is long. They also want a credible retention story — usually a combination of partner lock-ins, restrictive covenants, and continuity of the senior team.

Talent depth and succession fourth. PE consolidators specifically pay for talent depth because they need it to execute the buy-and-build thesis. Senior managers, directors, and partner-track talent need to be visible in the diligence pack with tenure, billings, and any retention commitments. A firm with strong succession depth materially outperforms a firm of similar EBITDA without it.

Practice management technology fifth. Time recording, billing, CRM, document management, audit and tax software. The cleanliness and integration of practice systems determines how easy it is for a buyer to integrate the firm post-completion, which affects price. Firms whose financial reporting cannot be reproduced from the underlying systems lose buyer enthusiasm during data-room review.

Our six-stage process runs senior-led across the full mandate. For accountancy firms, three things shape execution.

Partnership alignment is built into the readiness stage, not bolted on later. Where the partner group has not yet aligned on objectives, structure, proceeds split, lock-ins and post-sale roles, the readiness work covers it explicitly. The single fastest way to derail an accountancy firm sale is to arrive at exchange with the partner group still working through these questions in real time.

Buyer mapping is segmented and active. The PE consolidators in UK accountancy operate to different criteria, deploying capital at different rates, with different sub-sector focuses (audit-led, tax-led, advisory-led, outsourced-finance-led). Our buyer mapping identifies the active subset by sub-specialism and stage in cycle, supported by our proprietary technology layer for surfacing acquirer signals from licensed professional services M&A data.

Senior-led delivery matters disproportionately. The conversations buyers want to have are commercial, structural and behavioural at the same time — and partner groups read the seniority of the advisor on the other side. Generic process management does not produce the trust required to walk a partner group through to completion at premium pricing. See the professional services pillar for context and legal practices for the closest adjacent niche.