Company Sale In The UK: Key Legal Steps

Thinking about a company sale can be exciting and a little daunting. Whether you’re planning an exit, bringing in a buyer to fuel growth, or tidying up your structure ahead of investment, getting the legal foundations right will make the process smoother and protect your interests.

In this guide, we’ll walk you through how company sales typically work in the UK, the difference between share and asset deals, the key documents you’ll need, and the employment, data and regulatory issues to watch. If you prepare well, negotiate smartly and document the deal properly, you’ll set yourself up for a clean and confident completion.

What Does A Company Sale Involve?

A “company sale” usually means one of two structures:

• Share sale – the buyer acquires the shares in your company from the existing shareholders, taking the company “as is” (with all assets, contracts, employees and liabilities).
• Asset sale (business and assets sale) – the buyer picks specific assets and contracts out of the company and usually leaves behind unwanted liabilities.

Both options can achieve the same commercial outcome (the buyer ends up running the business), but the legal steps, tax consequences, and risk profile are quite different. We cover the key differences below so you can make an informed call with your deal team (legal, tax and financial advisers).

Most company sales follow a familiar path:

1. Preparation – get your house in order (financials, contracts, IP, HR, data protection, regulatory licences).
2. Heads of Terms – a high-level, non-binding term sheet setting out the price, structure, timetable and exclusivity.
3. Due diligence – the buyer reviews your business via a data room and Q&A.
4. Drafting and negotiation – main sale agreement, disclosure letter and ancillary documents.
5. Conditions and consents – landlord/lender consents, third-party approvals, regulatory filings.
6. Completion – signing and closing steps, funds flow, transfers, announcements.
7. Post-completion – earn-out calculations, restrictive covenants compliance, filings and integrations.

Getting expert help early can save time and reduce friction later. For example, mapping out your documents and compliance before the buyer starts diligence can make things much easier, and a clear Business Sale Agreement will anchor the deal and manage risk.

Share Sale Vs Asset Sale: Which Suits Your Business?

Choosing between a share sale and an asset sale is one of the first and most important decisions. Here’s how they differ from a legal and practical perspective.

Share Sale

In a share sale, the buyer acquires the shares in the company (Companies Act 2006 applies to mechanics and filings). They step into the shoes of the current owners, so the company continues with all its rights and obligations intact.

Pros:

• Smoother continuity – contracts, employees and licences usually remain with the company.
• Often simpler operationally – less need for assignments and novations.
• Attractive where the brand and corporate history matter.

Cons:

• Buyer takes all historic liabilities – this can lead to heavier warranties, indemnities and price negotiations.
• Stiff due diligence – expect deeper review of tax, compliance and litigation exposure.
• Stamp duty on shares may apply; it’s wise to factor in costs and timing for stamp duty on shares.

Share sales are documented with a share purchase agreement (SPA). Where existing investors or multiple owners are involved, aligning exit rights and signatures early helps. If you’re restructuring before a sale or adjusting governance, a robust Shareholders Agreement can also help manage expectations.

Asset Sale

In an asset sale, the buyer acquires specified assets (e.g. stock, equipment, IP, goodwill, customer lists) and sometimes contracts and employees. Everything must be listed and transferred individually.

Pros:

• Buyer can cherry-pick assets and leave behind liabilities.
• Clean break for unwanted obligations or historic issues.
• Useful where there are multiple business lines or complex liabilities in the company.

Cons:

• Assignments needed – key contracts, IP, and leases must be transferred or novated (third-party consent risk).
• Employment transfers are governed by TUPE (see below) and need careful planning.
• Regulatory licences can be personal to the company – re-applications may be needed.

Asset deals are documented with a business and assets sale agreement (BASA). Where property is involved, plan ahead for landlord consent and assigning a lease.

Legal Steps To Prepare Your Company For Sale

Preparation is everything. A buyer will pay more and move faster if your business is clean, compliant and well-documented.

1) Get Your Records And Contracts In Order

• Corporate – Companies House filings up to date, statutory registers (members, directors, PSC) complete, board/shareholder approvals on file.
• Financial – recent management accounts, filed accounts, tax returns and HMRC position, debt schedules.
• Commercial – signed customer and supplier contracts, correct terms, change-of-control clauses checked.
• IP – trade marks, copyright and domain ownership confirmed and assigned to the company (not individuals or contractors).
• HR – employment contracts, policies, right-to-work checks, payroll and holiday records, grievance/disciplinary records.
• Data – policies and registers aligned with UK GDPR and the Data Protection Act 2018 (particularly if you share data with third parties via a Data Sharing Agreement).

2) Build A Diligence-Ready Data Room

Assemble a clear file structure and label documents consistently. If in doubt, include a short index. A well-prepared seller data room speeds up Q&A and builds trust. If the buyer is new to the sector or your business is complex, you might consider a vendor due diligence report. Many sellers also add a simple Legal Due Diligence Package to pre-empt common issues.

3) Secure Confidentiality And Exclusivity

Before sharing sensitive information, put a well-drafted Non-Disclosure Agreement in place with each bidder. Your Heads of Terms can also include an exclusivity period so you’re not fielding multiple negotiations at once.

4) Identify Deal Breakers Early

List the consents you’ll need (landlord, lender, key customer “change of control” provisions, regulators). Flag any disputed liabilities or unresolved claims. Agree at a high level how these will be handled (for example, retained liabilities vs. indemnities) so you’re aligned before the lawyers draft.

Key Contracts And Documents In A Company Sale

While every deal is different, most company sales will include a core set of documents.

Sale Agreement

• Share sale – an SPA (share purchase agreement), sometimes supported by a Share Sale Agreement template adapted for your deal.
• Asset sale – a BASA (business and assets sale agreement), frequently referred to as a Business Sale Agreement.

These documents record the price and structure, split of risk (warranties and indemnities), limitations of liability, restrictive covenants, and the completion mechanics (what gets delivered and when).

Disclosure Letter

The disclosure letter qualifies your warranties. It’s your chance to make fair disclosures about the business so the buyer cannot later claim for issues you’ve already flagged. It must be precise and supported by documents in the data room.

Ancillary Documents

• Corporate approvals – board and shareholder resolutions authorising the transaction and signing. A concise Completion Checklist helps keep these on track.
• Transfers – stock transfer forms (for share deals) and share transfer entries in registers; assignments/novations for contracts and IP on asset deals.
• Employment – new service agreements for key managers if they’ll stay on, or settlement agreements where exits are planned.
• Leases – deed of assignment/landlord consent where premises transfer.
• Transitional services – arrangements for IT, finance, brand or logistics support while the buyer integrates.

Warranties, Indemnities And Restrictive Covenants

Buyers rely on warranties (statements about the business) to flush out risk and support claims if something material is untrue. Sellers push for limitations (time, caps, thresholds). Some specific risks are carved out to indemnities (e.g. a known tax issue). Expect bespoke covenants ensuring sellers don’t immediately compete or solicit staff or customers; these should be reasonable in scope and duration to remain enforceable.

Employment, Data And Regulatory Compliance

Some of the biggest risks in a company sale sit outside the headline price. Get these right to avoid delays and post-completion disputes.

Employees And TUPE

In share sales, employees remain employed by the same company with continuity of service. In asset sales, the Transfer of Undertakings (Protection of Employment) Regulations 2006 (TUPE) typically transfer employees to the buyer on their existing terms, with information and consultation duties. Buyers often ask about staff benefits, holiday accruals and any ongoing disputes; sellers may provide indemnities for pre-completion employment claims.

If a reorganisation is planned after completion, understand what TUPE allows and the limits on changing terms. For instance, changing pay or benefits can be restricted; see guidance around salary changes under TUPE. It’s also important to consider the people impact and obligations – our quick overview of employee rights when selling a business is a useful starting point.

Data Protection And Confidentiality

Under UK GDPR and the Data Protection Act 2018, both parties must handle personal data lawfully during diligence and transfer. That means minimising personal data in the data room, redacting where reasonable, ensuring a lawful basis for sharing, and using appropriate safeguards. Where customer or employee data is part of the assets being transferred, make sure your contracts and privacy notices permit this and that appropriate controller-to-controller terms (or fresh notices) are in place.

Don’t forget the basics: keep bidder access controlled, watermark downloads, and use the NDA to restrict use to evaluating the transaction.

Regulatory And Industry-Specific Issues

Depending on your sector, you may need regulator notifications or approvals (for example, FCA permissions, healthcare registrations, alcohol licences or environmental permits). Competition law (CMA) issues can arise in larger deals or where competitors combine. Build in time for these processes so they don’t derail your timetable.

Completion, Post-Completion And Common Pitfalls

Completion is where everything comes together – and where poor planning shows. A simple checklist and clear roles will keep things calm on the day.

Completion Steps

• Signing – execute the SPA/BASA and all ancillary documents (use correct execution blocks for companies and deeds).
• Funds flow – confirm consideration, debt repayments, adviser fees and retention/escrow arrangements.
• Deliverables – stock transfers, share certificates, updates to registers and Companies House filings, IP assignments, lease consents, and handover of keys and devices.
• Announcements – agree internal and external communications in advance, including customer notifications.

Post-Completion

• Filings – Companies House updates, stamp duty processes on share transfers, trade mark assignments and domain transfers.
• Integration – cutover for payroll, HRIS, bank mandates, insurance and IT access, plus any agreed transitional services.
• Earn-outs/adjustments – monitor earn-out milestones and prepare completion accounts or working capital true-ups as agreed.

Common Pitfalls To Avoid

• Missing third-party consents – a single “change of control” clause in a key contract can stall closing.
• Unclear IP ownership – if contractors created key assets, make sure IP was assigned to the company.
• Weak disclosure – vague or undocumented disclosures can fail to protect you.
• Overly broad covenants – non-competes that are too wide in time or geography risk being unenforceable.
• Employee surprises – TUPE missteps or unbudgeted liabilities can erode the purchase price.

If this feels like a lot to juggle, that’s normal. A structured process and the right documents will do the heavy lifting – from the core Business Sale Agreement through to a practical Completion Checklist to keep everyone aligned.

How To Negotiate Price, Risk And Timetable

Company sales are a balance of price, risk and speed. If the buyer is taking more risk (for example, in a share sale with limited diligence), they may seek a lower price or strong indemnities. If the business is “diligence-ready” and risk-light, you can push for a cleaner deal with tighter liability caps and shorter survival periods.

Helpful levers to consider:

• Price mechanics – locked box vs completion accounts; earn-outs tied to achievable metrics.
• Liability limits – overall caps, basket/de minimis thresholds, time limits for claims.
• Specific risks – tailor indemnities for known issues (e.g. a historic VAT query) rather than over-warrantying everything.
• Exclusivity – sufficient time for diligence and approvals, without dragging out momentum.
• Transitional support – short-term services to de-risk operational handover.

Don’t forget to document what’s agreed at headline level in clear Heads of Terms. While mostly non-binding, they set expectations and are invaluable when drafting starts.

Key Takeaways

• Choose the right structure early – a share sale offers continuity but transfers historic liabilities; an asset sale allows cherry-picking but needs assignments and careful TUPE planning.
• Preparation pays – build a clean, diligence-ready data room with complete financial, legal, HR and IP records, supported by NDAs and a sensible exclusivity window.
• Use the right documents – anchor the deal with a tailored SPA/BASA, precise disclosure letter and the necessary transfers, consents and approvals, guided by a practical completion checklist.
• Protect against risk – negotiate balanced warranties and indemnities, reasonable restrictive covenants, and clear price mechanics (locked box or completion accounts) with appropriate caps and time limits.
• Look after people and data – plan for TUPE and consultation duties, and handle personal data lawfully under UK GDPR throughout diligence and transfer.
• Plan the handover – line up landlord/lender consents, filings and integrations early so completion day runs smoothly and post-completion obligations aren’t missed.

If you’re considering a company sale and want tailored guidance or help drafting the key documents, our team can help you navigate the process from heads of terms to completion. You can reach us on 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.