Selling a business services company in the UK

You are a UK owner-manager who has spent ten, fifteen, sometimes twenty-five years building a business services firm. HR outsourcing, payroll, facilities management, contract cleaning, a specialist recruitment agency. Turnover is somewhere between £5M and £50M, EBITDA between £0.5M and £8M, and the question of what comes next has started to sit closer to the front of your mind than the back of it.

Most conversations we have at this point start the same way. The phone has started ringing. A trade buyer. A PE-backed consolidator. Sometimes an unsolicited approach with a specific number attached. You are not sure whether the number is fair, whether the buyer is serious, or whether running a structured process would surface something materially better. That is the conversation we are designed for.

We typically engage 12 to 24 months before a target exit window, though shorter mandates are common. Single-shareholder businesses, founder-plus-MD setups, and two- or three-principal partner equity structures are all standard. What unites them is a wish to run the process confidentially, off-market, and with senior attention from the first conversation through to completion.

This is not the right fit if your business sits below the £5M EV threshold. At that scale, traditional broker networks generally serve owners well and we will happily refer you to one we trust. It is also not the right fit if you have already decided to accept a specific buyer's approach and want help signing the documents. Where Mastella adds material value is in the structured competitive dynamic, and the senior-led negotiation, that come from running a credible process across the whole strategic and PE buyer landscape — see our process for how that actually runs.

Buyer behaviour in UK business services M&A has tightened materially since 2024. The PE-backed consolidators that dominated the buyer landscape in 2021-2023 are still active, but they have become significantly more disciplined about which businesses will receive premium multiples. Five things now consistently separate the businesses printing at the top of the range from those landing at the median.

First, recurring revenue mix. Buyers will diligence the proportion of revenue that is contracted forward and the average weighted contract tail across the top 20 clients. Businesses where more than 75% of revenue sits on contracts longer than 12 months typically attract one to two turns above the sector median.

Second, customer concentration. The headline rule of thumb in the lower mid-market is that no single customer should represent more than 10–15% of revenue. Above 20% you typically lose buyers entirely from a competitive process. Above 30% you almost certainly print at a discount unless the customer relationship is institutional and the contract tail is multi-year.

Third, founder dependency. The most overlooked diligence area in this sector. Buyers want to see a senior team that can run the business if you stepped back tomorrow. Building out a credible number-two and documenting founder-held client relationships is, in our experience, the single highest-return preparation work most owners do in the 12 months before going to market.

Fourth, technology stack and data quality. Buyers no longer treat operating systems, CRM data and integrated billing as a nice-to-have. They treat them as the prerequisite for any post-acquisition value-creation plan. Business services firms with material data hygiene issues consistently lose buyer enthusiasm during data-room review, regardless of headline financials.

Fifth, EBITDA quality and adjustment defensibility. The single most common reason deals re-trade between exchange and completion is the buyer's diligence team disputing seller adjustments. We work with owners to build an EBITDA bridge that is defensible to the line — see our exit planning advisor service for how this typically works 12 to 18 months out.

Our six-stage process is built around three things that distinguish it from the traditional advisor model: off-market sourcing, senior-led delivery, and a modern toolset for surfacing buyers other advisors miss.

Off-market means we approach a curated list of strategic and PE buyers directly under NDA. We do not list your business on broker networks or M&A databases. For business services owners, where staff, customers and competitors are typically reachable through the same trade channels, this is the only credible way to run a genuinely confidential process.

Senior-led means Leo personally runs every conversation that matters. Buyer mapping, financial normalisation, data-room build and the readiness diagnostic are supported by a small in-house team and a proprietary technology layer that surfaces buyer signals from public and licensed data sources. The decisions, the calls, the negotiation, and the day-to-day client relationship sit with the principal from first conversation to completion.

What is specific to business services: the buyer pool is unusually deep and concentrated. There are 15-25 active PE-backed consolidators across business services sub-sectors at any given time, each with distinct strategies on add-on size, geographic preference, and integration intensity. Knowing which subset is currently deploying capital, and on what terms, is the difference between running a generic auction and running a process that produces real competitive tension.