How long does it take to sell a business?

Selling a UK business typically takes 6–12 months, but preparation, complexity, and buyer type all shift the timeline significantly.

Series: Business sale process · Last updated: June 2026

The Gist

• Most UK business sales take between 6 and 12 months from the point you engage an adviser to legal completion.
• The four main stages — preparation, marketing, negotiation, and due diligence — each carry their own timeline, and delays in any one of them compound across the rest.
• Due diligence alone typically runs 45–90 days, and it is the stage most sellers are least prepared for.
• Rushing a sale almost always costs money. Founders who take time to prepare properly achieve stronger prices and better deal terms.
• CapEQ has completed a business sale in under five weeks when circumstances demanded it — but we would not recommend that pace unless there was a very specific reason.
• The right question is not "how quickly can I sell?" but "how well can I sell?" — and those two things are rarely the same answer.

There is an honest answer and a comfortable one. The comfortable answer is "six to nine months." The honest answer is: it depends on how ready you are, who buys you, and how many problems turn up in due diligence.

Most business sales complete within six to 12 months from the moment you formally engage an adviser. Well-prepared businesses at the simpler end of the market can transact in as little as four months. Complex deals — international buyers, multiple jurisdictions, regulatory consents, or tangled ownership structures — have been known to run to 12-18 months or beyond.

What founders rarely anticipate is how much of the timeline sits outside their control, and how much of what is in their control they have left unattended.

The four stages of a business sale — and how long each takes

Every business sale, regardless of size or sector, moves through four broad stages. The clock on each one starts when the previous one closes.

Stage 1: Preparation (2–3 months)

This is the stage most sellers underestimate — and where the greatest value is either created or lost.

Preparation covers everything that happens before a single approach is made to a buyer. That includes finalising your financial information memorandum (IM — the detailed document buyers use to evaluate your business), conducting internal due diligence to identify and resolve problems before they surface under buyer scrutiny, aligning your management team, and ensuring your accounts, contracts, and operational documentation are in order.

A business that arrives at market with clean, well-organised financials and a clear equity story moves faster at every subsequent stage. A business that arrives with three years of inconsistent management accounts and undocumented customer contracts will spend the back half of the process firefighting.

At CapEQ, we typically invest two to three months in preparation — longer if the business has structural issues worth addressing before we go to market. That time is rarely wasted. An extra month of preparation can be worth several multiples of EBITDA in the final price.

Stage 2: Marketing and buyer engagement (2–3 months)

Once your proposition is packaged, your adviser takes it to market. This stage involves identifying and approaching potential buyers — trade acquirers, private equity firms, family offices, or strategic investors — sharing a teaser document under non-disclosure agreement, and building a shortlist of parties serious enough to receive the full IM.

Generating genuine competitive tension takes time. Reaching each relevant buyer, allowing them to review the opportunity, and scheduling first-round meetings across a market where decision-makers are always busy typically runs to two to three months. Truncating this phase to save time is a false economy — fewer competing bidders means less leverage and, usually, a lower price.

Stage 3: Negotiation and heads of terms (1–2 months)

Once you have one or more credible offers on the table, your adviser works with you to negotiate the headline terms: price, structure (what proportion of the consideration is paid upfront versus deferred), earn-out conditions if applicable, and any material conditions precedent.

This stage culminates in signing heads of terms — a non-binding document that records the agreed commercial terms and triggers an exclusivity period during which one buyer conducts formal due diligence. Getting to signed heads typically takes four to eight weeks, depending on the number of competing parties and how much alignment is needed on deal structure.

Stage 4: Due diligence and legal completion (2–4 months)

Due diligence — the formal process by which a buyer validates every material claim about your business — is the longest, most demanding, and most unpredictable stage of any business sale.

For UK SME transactions, due diligence typically runs between 45 and 90 days. More complex businesses, particularly those with technology IP, property assets, or international operations, can see this phase extend to four months or beyond. The buyer's legal and financial advisers will comb through your accounts, contracts, employment arrangements, tax history, regulatory compliance, and intellectual property. Every gap in your documentation generates a question. Every question adds time.

A well-prepared data room — a secure, organised repository of all relevant business documents — materially reduces this phase. Sellers who have done the work upfront answer queries faster, maintain the buyer's confidence, and lose less deal momentum.

Legal drafting runs in parallel to due diligence, and the final weeks of any transaction involve negotiating the sale and purchase agreement (SPA — the binding contract governing the deal), warranties, indemnities, and any post-completion obligations.

What does this look like in practice?

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The factors that compress or extend your timeline

What accelerates a sale

A sale moves faster when the business is genuinely exit-ready. That means three years of clean, auditable accounts. Contracts with key customers and suppliers that are documented, transferable, and not personal to the owner. An operational management team that demonstrably runs the business day-to-day — reducing the key-person risk that buyers discount for and due diligence teams probe hard.

It also means realistic valuation expectations. Overpriced businesses sit on the market. Buyers sense an unrealistic seller and disengage. A well-advised founder who understands the range of achievable values before going to market avoids the wasted months of approaches that never convert.

Finally, speed correlates with adviser quality. An experienced M&A team anticipates problems before they surface, manages buyer communications professionally, and keeps the process moving even when diligence findings generate friction.

What slows a sale down

The biggest delays we see are: undisclosed issues surfacing in due diligence; a data room that is incomplete or poorly organised; third-party consents — from landlords, key clients, or regulatory bodies — that were not identified and started early enough; and buyer financing difficulties.

Owner vacillation also extends timelines. A founder who is genuinely undecided about selling introduces ambiguity into every conversation, and buyers eventually walk away from uncertainty.

Pro tip from Mark Sapsford: "The sellers who achieve the best outcomes — on price, on terms, and on timeline — are invariably the ones who treat exit preparation like a project, not an afterthought. Start 18 months before you think you need to. The preparatory work will make your business more valuable even if you decide not to sell."

What this looks like in practice: expedited and extended deals

We have sold a business in just over four weeks. The client faced an imminent supplier exclusivity deadline that made completion before a specific date commercially critical. Corners were cut, conditions were waived, and both sides worked at an intensity that is genuinely unsustainable. The deal completed. We would not recommend that approach unless the circumstances demanded it.

We have also worked with founders who, after beginning a formal process, concluded that the timing or the offers were wrong — and chose to pause. In several cases, those founders returned 12 to 24 months later with stronger financials, a cleaner management team, and significantly more leverage. The second attempt achieved materially better outcomes in every case.

When we advised on the sale of EPIC POB to Marineguard, a workplace safety systems provider for the offshore energy workers, the process required careful management of client relationships and a detailed diligence pack around key contracts. Taking the time to prepare that pack properly — rather than improvising under buyer pressure — kept the process moving when questions came in.

Similarly, the sale of JGA Fire to Jensen Hughes involved a specialist engineering business where demonstrating continuity of technical capability was central to the buyer's confidence. Building that evidence took time at the outset, but it substantially compressed the due diligence phase.

The question you should actually be asking

Founders often ask "how quickly can I sell my business?" The more useful question is "how well can I sell my business?" — and those two answers are rarely the same.

A compressed timeline almost always involves trade-offs: on price, on due diligence coverage, on deal terms. The buyers who push hardest for speed are often the ones who want to limit your time to find alternatives.

The businesses that achieve the strongest exits — in our experience across 100-plus completed transactions our Partners have led — are the ones that ran a disciplined process, maintained competitive tension, refused to be rushed into premature exclusivity, and walked away from early-stage approaches that undervalued what they had built.

Time, used properly, is a seller's asset. Managed well, it creates options. Options create competition. Competition creates value.

Checklist: are you ready to begin a business sale process?

•  Three years of clean, audited or reviewed management accounts prepared
•  EBITDA clearly defined and reconcilable to statutory accounts
•  Key customer and supplier contracts documented and reviewed for change-of-control clauses
•  Lease and property documents reviewed for consent requirements on sale
•  Intellectual property — patents, trademarks, software licences — documented and confirmed as owned by the company
•  Employment contracts, including for senior management, in order and up to date
•  No material undisclosed legal disputes, regulatory investigations, or warranty claims
•  Management team capable of running the business without the owner's daily involvement
•  A clear understanding of the range of achievable valuations based on market comparables
•  A personal plan for what happens after completion — including tax advice from a specialist
•  An M&A adviser engaged whose process you understand and whose alignment you trust
•  Realistic expectations about timeline set — and the business operationally prepared to absorb 12 months of parallel workload

Frequently asked questions

How long does it take to sell a business in the UK?

Most UK business sales take between six and twelve months from the point of formally engaging an adviser to legal completion. That range covers the four main stages: preparation, marketing, negotiation, and due diligence. Well-prepared businesses with clean financials and straightforward ownership structures can transact in four to six months. Complex deals — international buyers, regulatory consents, or businesses with tangled property or IP arrangements — regularly extend to eighteen months. The most reliable way to shorten the timeline is to invest in preparation before going to market.

What is the longest stage of a business sale?

Due diligence — the formal process by which a buyer verifies every material claim about your business — is typically the most time-consuming and unpredictable stage. For UK SME transactions, it runs between 45 and 90 days on average, and longer for more complex businesses. The speed of due diligence depends directly on how organised your documentation is. A well-prepared data room with clear, accessible information can reduce this phase by weeks. Gaps in documentation, undisclosed issues, or slow responses from the seller's team are the most common causes of delay.

Can I sell my business quickly — in less than six months?

It is possible but uncommon. Sales completing in under six months typically involve businesses that were already comprehensively exit-ready before an adviser was engaged, buyers who had done significant preparatory work and moved quickly, and relatively simple ownership and contract structures. CapEQ has completed a transaction in just over four weeks in exceptional circumstances — but that required waiving normal process protections and was driven by a specific commercial deadline. Compressed timelines carry real risks: less time for competitive tension to develop, less scrutiny of deal terms, and less leverage for the seller. Speed should serve the deal, not drive it.

What slows down a business sale most?

The three most common causes of delay are: problems surfacing during due diligence that were not identified or disclosed upfront; incomplete or disorganised documentation that generates ongoing buyer queries; and third-party consents — from landlords, regulators, or key clients — that take longer to obtain than anticipated. Owner indecision is also a significant factor. Buyers invest considerable time and resource in a process; if they sense ambivalence from the seller, they redirect that resource elsewhere. Starting a sale before you are genuinely committed to completing one wastes time on both sides.

Do I need an M&A adviser to sell my business?

For businesses in the £5m–£100m value range, working without a specialist M&A adviser is a material risk. Buyers in this segment are almost always represented by experienced corporate finance and legal teams whose interests are aligned with paying as little as possible and extracting as much protection as possible through warranties and indemnities. An unadvised seller is negotiating blind. A specialist adviser manages the process, maintains competitive tension between multiple buyers, structures the deal commercially, and protects the seller's interests at every stage of due diligence and legal drafting. The fee is almost always recovered many times over in the final price achieved.

How does a cross-border or international buyer affect the timeline?

Adding an international buyer to a sale process introduces additional complexity that typically extends the timeline by two to four months. Multiple legal jurisdictions create parallel streams of legal work. Currency and tax structuring require additional specialist input. Regulatory filings — particularly for regulated sectors or deals above merger control thresholds — can take weeks or months to clear. That said, international buyers often pay a premium, particularly when a business holds something genuinely scarce in their domestic market. The additional timeline is frequently worth the additional value.

About the author

Mark Sapsford is a co-founder and partner at CapEQ. Before advising founders on M&A transactions, Mark served in the RAF and built a career in the energy and recruitment sectors, including as a member of the management team that sold a tanker driver recruitment business — an experience he draws on directly when advising clients through the sale process. He has personally led over 51 completed transactions and has overseen more than 115 across CapEQ's portfolio. You can find out more about Mark's background at capeq.com/meet-the-team, or book a no-obligation conversation.

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