Home›FWJ Takeaway›Shareholder disputes›Share Purchase Dispute Guide
  1. Introduction
  2. What is a Share Purchase Agreement and Why Does It Matter?
  3. What are the common causes of share purchase disputes?
  4. What remedies are available in a share purchase dispute?
  5. What dispute resolution mechanisms are used in Share Purchase Agreements?
  6. What is the legal framework and statutory protection for share purchase disputes?
  7. What real world scenarios commonly trigger share purchase disputes?
  8. Frequently asked questions about share purchase disputes

1. Introduction

Share purchase disputes can be among the most complex and high-stakes legal disagreements faced by business owners, directors, and shareholders. Whether you are buying or selling a business—or involved in a company where shares have recently changed hands—disputes that arise during or after the transaction can have serious financial and operational consequences.

These disputes often arise from issues within the Share Purchase Agreement (SPA) itself: such as, ambiguous clauses, alleged breaches of warranties, financial discrepancies, or disagreements over post-completion obligations. In some cases, these disputes can be unintentional and may arise from a failure to anticipate the impact of future events or document key terms effectively.

At Francis Wilks & Jones, we understand the commercial pressure our clients face when a deal goes wrong. With decades of experience advising directors, shareholders, and SMEs across England, our specialist lawyers provide clear, decisive guidance to help resolve disputes swiftly—whether through negotiation, expert determination, or legal action.

This guide offers a practical and in-depth overview of share purchase disputes under English law. It covers:

  • The key terms and mechanisms within an SPA
  • Common causes of disputes and how to avoid them
  • Legal remedies and dispute resolution options
  • FAQs on rights, responsibilities, and next steps

Whether you are in the early stages of a disagreement or seeking to understand your position before signing an SPA, this resource is designed to help you navigate the process with clarity and confidence.

At a glance: what are share purchase disputes?

Share purchase disputes arise when a buyer or seller disagrees about rights or obligations under a Share Purchase Agreement (SPA), often after a company has been sold.

They usually involve allegations of breach of warranty, misrepresentation, inaccurate financial information, earn out disagreements or undisclosed liabilities that affect the value of the shares.

Most disputes turn on the wording of the SPA, the quality of the disclosure letter and the evidence available about what was said and relied upon before the sale completed.

Remedies range from damages and price adjustments to rescission of the deal in serious cases, together with statutory routes such as unfair prejudice petitions under the Companies Act 2006 and claims under the Misrepresentation Act 1967.

Early legal advice is critical, both to protect strict contractual time limits for notification of claims and to explore negotiation, expert determination or other dispute resolution options before costs escalate.

Francis Wilks & Jones advises buyers, sellers and shareholders across England and Wales on all stages of SPA negotiation and dispute, from risk management at drafting stage to High Court litigation.

2. What is a Share Purchase Agreement and Why Does It Matter?

At a glance: why does the SPA matter in share purchase disputes?

A Share Purchase Agreement is the central contract governing the sale and purchase of shares. Most disputes arise because key clauses, such as warranties, indemnities, earn out terms or disclosure requirements, were unclear or incomplete. A well-drafted SPA allocates risk fairly and reduces the chance of later disagreement.

A Share Purchase Agreement (SPA) is a legally binding contract used to transfer shares from one party to another. It sets out the terms of the sale and helps allocate risk between buyer and seller. A well-drafted SPA is essential to prevent future disputes.

A well-drafted SPA is more than just a sale contract—it is a risk management tool. It protects both buyer and seller by clarifying obligations and minimising ambiguity. Disputes often arise when an SPA lacks sufficient detail, uses vague language, or omits key provisions that would otherwise avoid disagreement.

SPAs are commonly used in:

  • Company sales and mergers
  • Buyouts of minority or majority shareholders
  • Investment transactions (e.g. private equity acquisitions)
  • Internal restructuring within corporate groups

In these contexts, the SPA must balance commercial flexibility with strong legal protections. Where that balance is not achieved, share purchase disputes are far more likely.

What Are the Key Clauses in a Share Purchase Agreement?

A typical SPA includes core commercial terms, legal protections, and dispute resolution clauses. These provisions aim to clarify the deal and reduce post-completion risk. If unclear or poorly worded, they can often trigger disputes later on.

Some of the most common clauses include:

  • Purchase price & payment structure – including any deferred payments, earn-out arrangements, or price adjustment mechanisms.
  • Warranties – statements made by the seller regarding the condition of the company, its assets, liabilities, employees, and finances.
  • Indemnities – targeted promises to cover specific known risks, such as ongoing litigation, tax exposures, or environmental liabilities.
  • Conditions precedent – conditions that must be fulfilled before completion, such as regulatory approvals or shareholder consents.
  • Restrictive covenants – to prevent the seller from competing with the business or soliciting employees/customers after completion.
  • Dispute resolution clauses – outlining how any future disagreements should be handled (e.g. mediation, expert determination, or arbitration).

These standard clauses can often become a source of dispute if they are unclear or poorly drafted. That is why it is essential for both parties to seek specialist legal advice at an early stage.

How does a Share Purchase Agreement differ from a shareholders’ agreement?

These are separate legal documents which have very different purposes. A Share Purchase Agreement (SPA) governs the transaction itself, while a Shareholders’ Agreement regulates the ongoing relationship between the owners of company.

Confusing these two documents is particularly common in owner-managed, family-run, or SME businesses—but understanding the distinction is crucial. Relying solely on an SPA without a shareholders’ agreement (or vice versa) can leave parties exposed to future disputes, governance problems, or enforcement challenges.

Here is a detailed breakdown of the key differences:

Feature

Share Purchase Agreement (SPA)

Shareholders’ Agreement

Purpose

Governs the sale or purchase of shares

Regulates ongoing rights and obligations between shareholders

Timing

Used during a transaction (e.g. acquisition, exit)

Used throughout the life of the company

Main Focus

Price, warranties, indemnities, completion

Voting rights, dividend policies, transfer restrictions

Parties Involved

Buyer and seller of shares

All or most current shareholders

Duration

One-off, applies to the transaction only

Long-term, applies until amended or terminated

Typical Clauses

Payment terms, earn-outs, conditions precedent, dispute resolution

Tag-along rights, drag-along rights, deadlock provisions, pre-emption rights

Enforceability

Enforceable under contract law once signed

Enforceable under contract law and often used alongside Articles of Association

Ideally, a company will have both documents in place: the SPA to handle the sale transaction, and a shareholders’ agreement to regulate the shareholders’ relationships going forward. Each serves a distinct legal and commercial purpose.

Is a Share Purchase Agreement legally binding?

Yes, an SPA tends to be legally binding once it is signed. At this point it becomes enforceable under English contract law, and can be used to bring a claim if one party breaches its terms.

Once executed, the SPA binds both parties to its terms—unless otherwise stated. That means a buyer can bring a claim for breach of contract if the seller fails to disclose a liability or breaches a warranty. Similarly, sellers can pursue buyers who fail to pay, breach exclusivity clauses, or walk away from a deal unlawfully.

Buyers should ensure that warranties are clearly worded and that time limits for bringing claims are realistic. Sellers should negotiate reasonable liability caps, thresholds, and clear procedures for notification of claims.

Who usually drafts the Share Purchase Agreement?

The buyer’s solicitor usually prepares the first draft of the SPA. This ensures the agreement reflects the buyer’s interests and allocates risk appropriately.

However, both sides usually engage legal advisers to negotiate terms, adjust risk allocations, and draft bespoke clauses. This negotiation stage is where many future disputes can either be prevented—or inadvertently seeded.

For example:

  • Sellers may push back on warranties that are too broad or unrealistic.
  • Buyers may want indemnities for known risks such as tax audits, unpaid debts, or pending claims.
  • Both parties should review how earn-out provisions are worded, as these are a common flashpoint in disputes.

At Francis Wilks & Jones, our team has decades of experience drafting and negotiating SPAs. Whether you are buying a company, selling your business, or managing a shareholder exit, we ensure your agreement is clear, fair, and legally secure.

3. What are the common causes of share purchase disputes?

At a glance: what most often triggers share purchase disputes?

Share purchase disputes usually arise when the buyer or seller believes that information provided before completion was inaccurate, incomplete or misleading. The most common triggers include alleged breaches of warranty, misrepresentation, inaccurate financial reporting and disagreements about earn out calculations.

Disputes also emerge when unexpected liabilities, regulatory problems or operational issues come to light after the sale, especially where the SPA or disclosure letter did not fully address these risks. Buyers often argue that the true value of the business was overstated, while sellers may claim that any issues were disclosed or should have been identified during due diligence.

Early legal advice can help determine whether a claim has merit, what remedies may be available and how strict contractual time limits and notification requirements should be managed to protect your position.

Disputes often arise after a share sale when: (i) reality fails to meet expectations, (ii) transactional disclosures have been misleading or incomplete, or (iii) the SPA is poorly drafted. Buyers may feel misled about the value or liabilities of the business, while sellers may believe claims brought against them are unjustified. Many of these disputes could be avoided with clearer documentation and early legal advice.

The period after a share purchase can be highly sensitive, especially when the buyer begins to scrutinise financial records, staff contracts, tax affairs, or pending liabilities. If anything appears inconsistent with what was presented pre-sale—or if there are operational issues not disclosed during due diligence—the buyer may feel aggrieved and look for legal remedies.

Sellers, in turn, may find themselves facing aggressive claims that were not anticipated. This is where the detail, clarity, and negotiation history of the SPA become crucial.

Below are some of the most common triggers for share purchase disputes we encounter.

How does a breach of warranty lead to a share purchase dispute?

Warranties are contractual assurances given by the seller about the condition of the business. A dispute arises when the buyer alleges that one or more of these statements were untrue or misleading at the time of sale. Typical warranty breaches include:

  • Undisclosed liabilities (e.g. tax arrears or litigation)
  • Inaccurate financial information
  • Misrepresentation of asset ownership
  • Incorrect statements about employee or customer contracts

Warranty disputes are among the most common issues following a share sale. They can cover a broad range of operational, financial, and legal areas—especially where the buyer feels misled or exposed to risks not disclosed at the time of the transaction.

Here are the most frequent categories of warranty claim:

Financial warranty disputes

These occur when the seller gives assurances about the accuracy of the company’s accounts or financial condition. If the buyer later discovers overstated revenues, hidden debts, or inflated asset values, they may claim that the shares were purchased at an unfair price.

Legal or regulatory warranty disputes

SPAs often contain warranties confirming that the company complies with laws and regulations. If, post-sale, it turns out that the business has breached regulatory requirements—such as GDPR, health and safety, or licensing obligations—the buyer may claim that these warranties were false.

Asset ownership and title warranties

Sellers typically warrant that the company owns or has full rights to use all key assets. If ownership is disputed or subject to third-party claims (such as leased equipment, unregistered trademarks, or encumbered property), the buyer may bring a claim, especially if the asset was central to business value.

Employment and HR warranty disputes

Warranties usually confirm that employment contracts are in place, disputes are disclosed, and pension contributions are up to date. If the buyer discovers tribunal claims, TUPE issues, or unpaid liabilities to employees, they may allege breach and seek indemnification.

Tax warranty disputes

The SPA often contains warranties that the company is up to date with all tax payments and compliance obligations. If HMRC initiates an investigation, or backdated tax becomes payable, the buyer may pursue the seller under the tax warranties—even if the issue arose from historic conduct.

Intellectual Property (IP) warranty disputes

Warranties around ownership and use of intellectual property are vital, particularly in technology or creative industries. If a key software licence has expired, or if a product infringes another party’s IP, this can lead to high-value claims with reputational consequences.

Operational warranty disputes

These disputes involve claims that the seller misrepresented the status of key contracts, supplier relationships, or infrastructure. A buyer may discover, for instance, that essential systems are outdated or that a key supplier planned to terminate a contract pre-sale.

Client or revenue stability warranties

Warranties about revenue, trading continuity, or the stability of customer relationships can give rise to disputes—especially where a major client terminates soon after completion. Buyers may argue that the seller failed to disclose pending terminations or adverse trends.

Incomplete or misleading disclosure

Even if a warranty appears to be breached, the seller may rely on disclosures made in the disclosure letter to avoid liability. However, if the buyer alleges that the disclosures were vague, incomplete, or misleading, this can escalate into a dispute of its own.

These disputes often hinge on how carefully the SPA was drafted—and how fully the disclosure letter was prepared. Our team at Francis Wilks & Jones advises both buyers and sellers to ensure warranties are realistic, clearly defined, and properly supported by disclosures to reduce the risk of later litigation.

What is misrepresentation in the context of a share purchase dispute?

Misrepresentation occurs when a seller makes a false or misleading statement—either before or within the SPA—that induces the buyer to enter the agreement. Unlike a breach of warranty, a misrepresentation can give rise to broader remedies, including rescission of the contract or damages.

Misrepresentation claims are often more serious than breach of warranty claims because they can lead to the entire transaction being unwound. These disputes can be complex, particularly when allegations involve dishonesty or when the distinction between representations and warranties is blurred.

There are three main types of misrepresentation under English law:

Fraudulent misrepresentation

This occurs when the seller knowingly or recklessly makes a false statement with the intention of misleading the buyer. For example, a seller might knowingly conceal litigation, overstate revenue, or falsely claim that a major contract has been renewed.

Claims for fraudulent misrepresentation are rare but severe. The buyer can seek rescission (to undo the transaction entirely) and damages, including consequential losses. Courts take a strong stance where there is evidence of intentional deceit.

Negligent misrepresentation (under the Misrepresentation Act 1967)

Negligent misrepresentation arises when the seller makes a false statement believing it to be true, but without having taken reasonable care to verify it. The buyer does not need to prove intent—only that the statement was false and relied upon.

For example, if a seller claims the company has no pending disputes based on informal assurances, but a dispute later surfaces that they failed to properly check, this could amount to negligence.

Buyers in these cases can claim rescission or damages in lieu of rescission, especially if unwinding the deal is impractical.

Innocent misrepresentation

This is when the seller genuinely believes the statement to be true and has reasonable grounds for doing so, but the statement later proves to be false.

While rescission may still be available, damages are not usually awarded unless the buyer can show a legal basis outside of misrepresentation—such as breach of contract.

These cases are less likely to result in aggressive litigation but may still affect the parties’ commercial relationship and trust.

Pre-Contractual representations vs warranties

A key issue in many disputes is whether a statement made before the SPA was signed amounts to a representation or has been “elevated” to a contractual warranty. If the SPA states that no party has relied on pre-contractual representations, this can limit a buyer’s ability to bring a misrepresentation claim.

However, these “entire agreement” clauses must be clearly worded and cannot always exclude fraud or negligent misstatement. Courts often look closely at negotiation records, correspondence, and disclosure documents to assess what was said—and relied upon.

Proving reliance

For any misrepresentation claim to succeed, the buyer must show they relied on the false statement when deciding to enter the SPA. The more casual or informal the statement, the harder this is to prove.

This is why buyers should:

  • Keep a clear record of information provided pre-sale
  • Ensure key assurances are recorded in the SPA as warranties
  • Investigate any vague or uncertain statements during due diligence

Sellers, in turn, should:

  • Avoid making sweeping verbal assurances
  • Use well-drafted “entire agreement” clauses
  • Work closely with legal counsel on disclosures and risk allocation

At Francis Wilks & Jones, we advise clients on both sides of misrepresentation disputes—from defending sellers accused of wrongdoing to helping buyers recover losses caused by false or incomplete information. Early advice is critical, especially when the validity of the entire transaction may be at stake.

Why do earn out clauses often lead to disputes?

Earn-out clauses allow part of the purchase price to be paid in future, often based on the company’s financial performance after completion. Disputes arise when one party believes the other has manipulated the outcome, misunderstood the terms, or breached the spirit of the agreement.

Earn-outs are a common way to bridge valuation gaps in share sales. The idea is simple: the seller receives a base payment up front, with additional payments (“earn-outs”) made only if the business hits agreed targets after the sale.

Unfortunately, earn-outs are one of the most common triggers of post-completion disputes. These claims can quickly become contentious, especially if the buyer is now in control of the company and has influence over the performance metrics.

Here are some of the key types of earn-out disputes we see:

Manipulation of financial results

The most frequent dispute involves a buyer allegedly taking steps that reduce the company’s reported profits—either deliberately or as part of their operational style.

Examples include:

  • Deferring profitable contracts until after the earn-out period ends
  • Charging additional group overheads to the company
  • Changing accounting policies or treatment of key costs

Sellers may allege that the buyer acted in bad faith or breached an implied obligation not to frustrate the earn-out.

Ambiguity in earn-out formula

If the SPA does not clearly define how the earn-out is calculated—e.g. EBITDA, turnover, net profit—there is significant room for interpretation. Even subtle differences in accounting treatment can materially impact the amount payable.

Disputes often arise where:

  • Definitions of financial terms are missing or vague
  • The measurement period is unclear
  • There is no mechanism for resolving disagreements over interpretation

Clarity at drafting stage is essential to reduce this risk.

Changes to business operations post-sale

Earn-outs often assume the company will continue operating as it did pre-sale. But if the buyer significantly restructures the business, changes its focus, or merges it into another entity, the earn-out conditions may become unachievable.

This can lead to claims that:

  • The buyer breached an express or implied duty of good faith
  • There was a failure to act in a commercially reasonable manner
  • The buyer intentionally disrupted the earn-out mechanics

Well-drafted SPAs often include operational covenants to mitigate this risk.

Disputes over governance or access to information

Sellers often want to monitor performance during the earn-out period to ensure targets are being fairly assessed. However, once the buyer owns the company, the seller’s visibility may be limited.

If the SPA does not include proper information rights, audit access, or a defined reporting process, disputes can arise over how figures are produced and verified.

Solutions in well-drafted SPAs

To minimise the risk of disputes, parties should:

  • Clearly define all financial terms and targets
  • Set out specific reporting obligations and audit rights
  • Include a dispute resolution mechanism (e.g. expert determination by an accountant)
  • Consider including an express duty of good faith or reasonable efforts clause

Where disputes do arise, many SPAs direct parties to binding expert determination, but where there is no such clause—or the dispute extends beyond technical accounting—litigation or arbitration may follow.

At Francis Wilks & Jones, our team regularly advises on both drafting and enforcement of earn-out provisions. We help clients resolve disputes efficiently and ensure that future earn-outs are clear, enforceable, and commercially realistic.

How do disputes over financial reporting arise after a share sale?

Share purchases often rely heavily on financial statements—both historic and forward-looking. Disputes arise when the buyer later discovers that those accounts were inaccurate, incomplete, or misleading, particularly where financial warranties or completion accounts are involved.

The financial condition of a company is a key factor in valuing its shares. Whether the SPA includes completion accounts, a locked box mechanism, or financial warranties, inaccurate reporting can lead to serious claims post-completion.

Here are the most common types of financial reporting disputes:

Inaccurate or misleading financial statements

A buyer may claim that the company’s financial accounts overstated its assets, understated liabilities, or failed to present a true picture of its financial health.

These claims may relate to:

  • Inflated revenue or profit figures
  • Hidden or undisclosed liabilities (e.g. unpaid taxes, overdue debts)
  • Overvaluation of assets, such as stock, goodwill, or property
  • Unrecorded provisions (e.g. for doubtful debts or claims)

Buyers often argue that, had the financial information been accurate, they would have paid less—or not proceeded at all.

Completion accounts disputes

Where the SPA includes completion accounts to adjust the purchase price post-sale, disputes can arise over how those accounts are prepared.

Typical issues include:

  • Disagreements on valuation methods (e.g. accruals vs cash basis)
  • Timing of income and expenditure recognition
  • Inclusion or exclusion of certain transactions or liabilities

Many SPAs include a mechanism for resolving these issues via expert determination, usually by an independent accountant. However, if that process is unclear or missing, disputes can escalate into litigation.

Locked box mechanism issues

In a locked box structure, the purchase price is fixed based on a balance sheet drawn up before the sale. The seller gives warranties that no value will “leak” out of the company between that date and completion.

Disputes may arise if:

  • The buyer believes value has been extracted (e.g. through dividends or unusual payments)
  • The locked box accounts were not properly prepared
  • There was insufficient protection against leakage in the SPA

These disputes often depend on forensic accounting and the precision of drafting.

Breach of financial warranties

If the seller warranted that the accounts were prepared in accordance with accounting standards or gave a “true and fair view,” and that proves untrue, the buyer may claim a breach of warranty rather than a standalone reporting issue.

This can open the door to broader remedies, including damages. These disputes often overlap with breach of warranty or misrepresentation claims and require careful legal and financial analysis.

Inadequate disclosure of financial risk

Sellers may disclose financial risks or assumptions during due diligence or in the disclosure letter. If these are vague, inconsistent with the accounts, or not made at all, a buyer may allege they were misled.

Buyers should ensure:

  • Key financial disclosures are in writing and verifiable
  • Warranties are not overly qualified or reliant on ambiguous disclosures
  • Financial assumptions are scrutinised during due diligence

Sellers, on the other hand, should aim to provide clear, comprehensive disclosure and seek appropriate caps and thresholds on liability.

At Francis Wilks & Jones, we regularly act in disputes involving financial accounts, earn-outs, and post-completion adjustments. Our team combines legal expertise with commercial and accounting insight to ensure your position is protected—whether you are making or defending a claim.

What post completion issues commonly trigger share purchase disputes?

Even when a share sale appears smooth at completion, problems can emerge after the deal closes. These may involve hidden liabilities, operational disruptions, or issues with staff, contracts, or customers. Disputes arise when buyers believe these matters were not disclosed—or should have been foreseen by the seller.

Many post-completion disputes are triggered not by specific clauses in the SPA, but by unexpected real-world problems that arise once the buyer takes control of the company. These issues often expose weaknesses in due diligence or gaps in the warranties and indemnities agreed at the time of sale.

Below are common types of post-completion problems that give rise to disputes:

Sudden loss of key clients or contracts

Buyers may find that a significant customer cancels or fails to renew a contract shortly after completion—something that was not disclosed during the sale. If the seller had prior knowledge of the risk and failed to disclose it, this could lead to claims of misrepresentation or breach of warranty.

Even if the loss occurs unexpectedly, buyers may argue that the risk should have been flagged, particularly where the SPA includes warranties about client relationships or revenue continuity.

Departure of key employees

Buyers sometimes encounter surprise resignations among senior staff or employees critical to operations, shortly after taking over. If the seller warranted that there were no known staff departures pending—or failed to disclose warning signs—this can give rise to liability.

In some cases, sellers may have promised retention bonuses or incentives but failed to formalise or communicate them, leading to disputes about who is at fault for the departures.

Discovery of undisclosed liabilities

Post-completion audits or operational handovers may reveal debts, obligations, or claims that were not disclosed during due diligence. These might include:

  • Trade creditor arrears
  • Tax liabilities
  • Employee claims
  • Regulatory non-compliance penalties

Whether these give rise to a valid claim depends on the terms of the SPA—particularly around warranties, indemnities, and disclosure.

Regulatory or licensing problems

The company may be operating in breach of regulatory conditions that the seller failed to disclose. This is especially critical in regulated industries (e.g. financial services, healthcare, education), where licences, accreditations, or registrations are fundamental to trading.

If these lapses affect the business’s ability to operate lawfully, the buyer may seek to rescind the deal or claim for damages.

Poor post-sale integration or system failures

Sometimes, problems are not due to the seller’s actions but result from a lack of integration planning post-sale. Buyers may experience IT issues, mismatches in internal systems, or culture clashes that impact performance.

While these may not lead directly to claims, they can create friction and prompt parties to revisit the SPA’s terms to assess responsibilities.

How to minimise post-completion risk

Both parties should:

  • Ensure warranties are tailored, not boilerplate
  • Document any known risks in the disclosure letter
  • Set clear post-completion obligations (e.g. handover support, information rights)
  • Consider retention mechanisms or deferred consideration structures to give the buyer recourse

At Francis Wilks & Jones, we advise clients from the earliest stages of negotiation through to resolution of post-completion disputes. Where problems do arise, we work quickly to assess the legal position and recommend practical, commercially focused solutions.

How do regulatory or compliance failures lead to share purchase disputes?

A share purchase can unravel quickly if the acquired company is found to be non-compliant with key legal, tax, or industry-specific regulations. Disputes arise when buyers discover these issues after completion—especially where the seller failed to disclose known risks or breached warranties in the SPA.

Compliance and regulatory failures often lie beneath the surface of a transaction, only becoming apparent during integration, audits, or external inspections. When these failures carry fines, trading restrictions, or reputational damage, buyers understandably seek to recover losses through claims.

Common types of compliance-related disputes include:

Trading without appropriate licences or approvals

In regulated sectors—such as financial services, education, healthcare, or transport—trading without the correct permissions can lead to immediate intervention by regulators. If the seller warranted that all consents were in place, the buyer may pursue them for breach if this turns out to be false.

For example:

  • FCA authorisations not being valid
  • Expired or revoked industry licences
  • Missing data protection registrations

These issues can halt operations and expose the buyer to fines or reputational harm.

HMRC non-compliance or tax irregularities

A common dispute arises when the company has failed to meet its obligations with HMRC, including PAYE, VAT, or corporation tax filings. If these liabilities are not properly disclosed—or the SPA contains warranties that they are up to date—buyers may bring claims.

Even if the issue was inadvertent, the costs and time to rectify can be substantial. Some SPAs include tax indemnities specifically to cover these risks, but if drafted narrowly, they may not protect the buyer fully.

Data Protection and GDPR breaches

Sellers often warrant that the company complies with data protection laws, including the UK GDPR. If the buyer later discovers that customer or employee data has been mishandled, or that the company failed to implement proper controls, they may face regulatory enforcement or claims from individuals.

These disputes can involve:

  • Failure to obtain valid consent for data use
  • Inadequate security or retention procedures
  • Absence of a data protection officer or impact assessments where required

Where customer trust is vital—e.g. in e-commerce or health data sectors—these failures can be particularly damaging.

Health & Safety or environmental compliance failures

In sectors with physical premises, manufacturing processes, or hazardous activities, buyers may discover post-completion that the company:

  • Lacks up-to-date health and safety policies
  • Is under investigation by the HSE
  • Has breached environmental permits or caused contamination

These problems can lead to enforcement notices, closure of premises, or long-term clean-up obligations.

If the seller gave warranties that there were no breaches or pending investigations, the buyer may claim for breach—or seek damages based on cleanup or remediation costs.

Reducing regulatory risk in SPAs

To minimise disputes, the SPA should include:

  • Warranties around licences, registrations, and legal compliance
  • Targeted indemnities for known regulatory risks
  • Disclosure of any pending audits, notices, or investigations
  • Clauses allowing delayed consideration or retention until regulatory clearance is confirmed

At Francis Wilks & Jones, we work closely with our clients to assess compliance risk during the due diligence process, ensure appropriate protections are built into the SPA, and resolve post-sale disputes if things go wrong.

4. What remedies are available in a share purchase dispute?

At a glance: what remedies can buyers and sellers seek in a share purchase dispute?

When a dispute arises under a Share Purchase Agreement, the remedies available depend on the nature of the issue and the wording of the contract. The most common remedies are damages for breach of warranty or contract, recovery under specific indemnities and, in serious cases, rescission of the agreement where the buyer seeks to unwind the transaction.

Parties may also pursue equitable remedies such as specific performance or declaratory relief if clarity is needed on how the SPA should operate. Statutory routes, including unfair prejudice petitions under section 994 of the Companies Act 2006 or claims under the Misrepresentation Act 1967, may be available where contractual protections are insufficient.

Choosing the right remedy requires early assessment of the evidence, the disclosure letter, any contractual time limits and the commercial impact of each option. Early legal advice helps preserve rights and prevents procedural missteps that could weaken a claim.

When a share purchase dispute arises, the buyer or seller may be entitled to pursue legal remedies depending on the nature of the issue and what the Share Purchase Agreement (SPA) allows. Remedies can include financial compensation, contract termination, or equitable relief.

The type of remedy available depends on the legal basis of the claim—such as breach of warranty, misrepresentation, or breach of contract—and the specific wording of the SPA.

Remedies typically fall into two main categories:

  • Contractual remedies, as outlined in the SPA itself (e.g. damages, indemnities)
  • Statutory remedies, available under general contract or company law (e.g. rescission, unfair prejudice claims)

Below are the most commonly sought remedies in share purchase disputes.

How do damages for breach of warranty or contract work in a share purchase dispute?

Damages are the most common remedy in share purchase disputes. They aim to place the claimant in the position they would have been in had the breach not occurred—typically through a reduction in the effective value of the shares.

To succeed in a damages claim, the buyer must show:

  • That a specific warranty or contract term was breached
  • That the breach caused a quantifiable loss
  • That the loss was not too remote or speculative

The calculation of damages often involves complex valuation analysis. For example, if the company’s true value was £1.2 million but the buyer paid £1.5 million based on misleading warranties, the buyer may seek £300,000 in damages.

Many SPAs include:

  • Caps (e.g. limiting liability to a percentage of the purchase price)
  • Thresholds or de minimis amounts
  • Time limits for bringing claims (sometimes as short as 12–24 months)

These can significantly affect the availability and scope of a claim.

When is rescission available to undo a share purchase agreement?

In serious cases—especially involving fraud or negligent misrepresentation—the buyer may seek rescission, which sets the contract aside and attempts to restore the parties to their pre-sale positions.

Rescission is an equitable remedy that unwinds the sale as if it never happened. It’s only available in specific circumstances, typically involving:

  • Fraudulent misrepresentation
  • Negligent misrepresentation
  • A fundamental failure in the formation of the contract

Courts are often reluctant to grant rescission if:

  • The company’s assets or structure have materially changed
  • Third-party rights have intervened
  • It is no longer possible to restore the original position

If full rescission is not available (because the parties have changed their positions), the buyer may instead seek damages in lieu of rescission under the Misrepresentation Act 1967.

How do contractual indemnities operate in share purchase disputes?

Many SPAs include indemnity clauses where the seller agrees to reimburse the buyer for specific risks, such as known tax liabilities or pending litigation. These indemnities are typically enforceable without needing to prove loss in the same way as a breach of warranty.

Indemnities differ from warranties in several key ways:

  • They usually cover known or high-risk issues (e.g. a specific tax exposure)
  • They may offer a pound-for-pound recovery, without needing to prove overall reduction in share value
  • The buyer may not need to prove reliance or foreseeability of the loss

However, the scope and wording of the indemnity clause is crucial. If the indemnity is vague or limited in duration or amount, the buyer may find it hard to enforce.

We often advise buyers to negotiate targeted indemnities for:

  • Unpaid tax liabilities
  • Environmental risks
  • Ongoing litigation or regulatory investigations
  • Contractual disputes involving key suppliers or customers

When will the court order specific performance of a Share Purchase Agreement?

In rare cases, the court may compel a party to fulfil a specific obligation under the SPA – rather than awarding damages. This remedy is known as specific performance and is typically used when money alone is not an adequate remedy.

Specific performance is an equitable remedy and is not awarded automatically. It is most commonly sought in situations where:

  • The buyer wants the sale to go ahead (e.g. seller is refusing to complete)
  • The asset involved is unique (e.g. a company with strategic IP or market position)
  • Monetary compensation would not adequately address the loss

Courts will consider:

  • Whether the SPA is sufficiently certain in its terms
  • Whether the party seeking performance has acted fairly
  • Whether the obligation is capable of enforcement (e.g. delivering share certificates, board resolutions)

This remedy is often used in pre-completion disputes, where one party is trying to walk away from the deal unlawfully.

When is declaratory relief useful in a share purchase dispute?

A party may seek a declaration from the court clarifying their rights under the SPA or confirming whether a breach has occurred. This remedy can be useful where one party is refusing to act due to uncertainty or threat of future claims.

Declaratory relief is a flexible tool. It allows a party to ask the court to clarify a legal position without necessarily awarding damages or enforcing specific actions.

For example, a buyer may seek a declaration that:

  • A warranty has been breached
  • A certain clause in the SPA should be interpreted a particular way
  • They are not liable for an indemnity the seller is trying to enforce

This remedy can help resolve disputes before they escalate or provide clarity that unlocks a stalled negotiation.

How does expert determination operate as a remedy under a Share Purchase Agreement?

Many SPAs include clauses requiring certain disputes—especially financial ones—to be resolved by an independent expert, such as an accountant. This method is often faster, more specialised, and less adversarial than court proceedings.

Expert determination is commonly used for disputes involving:

  • Completion accounts
  • Earn-out calculations
  • Working capital adjustments
  • Valuation disagreements

Key features include:

  • The expert is usually jointly appointed
  • Their decision may be binding or non-binding, depending on the clause
  • Courts will generally uphold expert decisions if the process was followed correctly

Parties should ensure the SPA:

  • Clearly defines the scope of expert input
  • Identifies how the expert will be appointed
  • Clarifies whether the decision will be final and binding

Where used properly, expert determination can offer a cost-effective and less confrontational route to resolution.

When will arbitration be used to resolve share purchase disputes?

If the SPA includes an arbitration clause, parties may be required to resolve disputes privately through arbitration rather than court. Arbitration offers confidentiality and flexibility and can be quicker—though not always cheaper.

Arbitration may be particularly appropriate in:

  • Cross-border share purchases
  • High-value disputes requiring confidentiality
  • Cases involving commercial sensitivities or complex technical evidence

Key benefits:

  • Proceedings are private and confidential
  • Parties often choose arbitrators with relevant expertise
  • Awards are enforceable internationally under the New York Convention

However, arbitration has limitations:

  • Limited rights of appeal
  • Arbitrators’ fees can be high
  • Timeframes vary widely depending on process complexity

If an SPA includes both arbitration and expert determination clauses, the scope of each should be carefully defined to avoid jurisdictional overlap.

How can an unfair prejudice petition under section 994 of the Companies Act 2006 assist in a share purchase dispute?

If a shareholder feels they have been unfairly prejudiced, such as by a breach of fiduciary duty or exclusion from management, they may petition the court for relief under section 994 of the Companies Act 2006. This can overlap with share purchase disputes, especially in SME or family-run businesses.

Section 994 allows shareholders to apply to court if:

  • The company’s affairs are being conducted in a manner unfairly prejudicial to their interests
  • Their interests have been unfairly disregarded during or after a share sale

Common unfair prejudice claims include:

  • Exclusion from decision-making
  • Dilution of shareholding post-sale
  • Misuse of company funds or assets
  • Breach of legitimate expectations between shareholders

Remedies under s.994 can include:

  • Ordering the purchase of shares at fair value
  • Regulation of company affairs
  • Injunctions or changes in management conduct

While not strictly a contractual remedy, unfair prejudice petitions are often used where SPA protections are absent or insufficient—particularly where minority shareholders are left vulnerable after a transaction.

5. What dispute resolution mechanisms are used in Share Purchase Agreements?

At a glance: how are disputes under a Share Purchase Agreement usually resolved?

Most Share Purchase Agreements set out a tiered dispute resolution process designed to manage conflict efficiently and avoid unnecessary litigation. Many disagreements begin with informal negotiation, followed by expert determination for technical or financial issues, particularly those involving completion accounts or earn out calculations.

Where negotiation or expert determination does not resolve matters, parties may turn to mediation or arbitration, depending on the clauses agreed. Mediation offers confidentiality and flexibility, while arbitration provides a private, specialist forum that may be more suitable for high-value or cross border disputes. Litigation remains available where urgent relief is needed, where fraud or misrepresentation is alleged, or where the SPA does not provide an alternative mechanism.

Understanding the dispute resolution provisions in the SPA is essential. They can dictate how and when a claim must be brought, who has jurisdiction and what procedures must be followed before a court will hear the matter.

Most well-drafted Share Purchase Agreements include specific provisions for how disputes should be resolved. These mechanisms help manage risk, reduce uncertainty, and often avoid full-scale litigation. The right approach depends on the nature of the dispute and how the SPA was negotiated.

Disputes under an SPA can vary from technical disagreements about completion accounts to more serious allegations like fraud or breach of warranty. To avoid prolonged court proceedings, many agreements set out a tiered dispute resolution process, which may include:

  • Informal negotiation
  • Expert determination
  • Mediation or arbitration
  • Litigation in court (if all else fails)

Choosing the right method can preserve commercial relationships and resolve issues more quickly and cost-effectively.

Below are the most common dispute resolution mechanisms used in SPAs.

How does negotiation and informal resolution work in share purchase disputes?

Most SPAs encourage the parties to attempt to resolve disputes through informal discussion first. This gives both sides a chance to explore solutions without legal escalation.

A clause may state that senior representatives of each party must meet within a set period (e.g. 14 days) of a dispute being raised to try to resolve the matter.

Benefits of early negotiation include:

  • Speed and cost-efficiency
  • Preservation of commercial relationships
  • Confidentiality and flexibility

Many disputes—especially those involving earn-out calculations or minor warranty issues—can be resolved through open dialogue without invoking more formal remedies.

Even if negotiation fails, these early steps often set the tone for how the rest of the dispute is handled.

When is expert determination appropriate in Share Purchase Agreement disputes?

Where the dispute concerns a technical or financial issue, such as working capital adjustments or earn-out calculations, SPAs often require the parties to appoint an independent expert—typically an accountant—to determine the matter.

Expert determination clauses usually provide:

  • How the expert will be appointed (e.g. by agreement, or through a professional body like the ICAEW)
  • What specific dispute the expert will resolve
  • Whether the expert’s decision is binding or subject to appeal

This process is particularly useful for:

  • Disputes over completion accounts
  • Application of accounting standards
  • Calculation of deferred consideration

Unlike arbitration, expert determination is not a legal process and does not follow formal procedures. It is faster, more targeted, and usually lower in cost.

However, the parties must:

  • Clearly define the expert’s scope
  • Ensure there is no overlap with arbitration or court jurisdiction
  • Accept that appeals are limited unless fraud or manifest error is proven

How can mediation help resolve a share purchase dispute?

Mediation involves a neutral third party helping the parties negotiate a settlement. It is non-binding and confidential, making it ideal for disputes where maintaining relationships matters.

Mediation is often included as a mandatory step before litigation or arbitration. It may be facilitated by a mediator from a recognised body such as the Centre for Effective Dispute Resolution (CEDR).

Benefits include:

  • Confidentiality (useful for reputational concerns)
  • Flexibility and control over outcomes
  • Potential for creative, commercial solutions

It is particularly suitable for:

  • Disputes involving earn-outs, ongoing business relationships, or minority shareholder disagreements

Mediation may not resolve every issue, but it often narrows the scope of the dispute, saving significant time and cost.

When is arbitration used instead of court proceedings in SPA disputes?

Some SPAs opt for arbitration instead of court litigation—especially in cross-border transactions. Arbitration offers confidentiality, specialist adjudication, and enforceability across jurisdictions.

Arbitration clauses should specify:

  • The arbitration rules (e.g. LCIA, ICC, UNCITRAL)
  • The seat and language of the arbitration
  • Number and qualifications of arbitrators
  • Whether the decision is final and binding

Advantages include:

  • Private proceedings and non-public awards
  • Choice of arbitrator with relevant expertise
  • Enforceability of awards under the New York Convention

However, arbitration can still be time-consuming and costly. It is best suited to:

  • High-value commercial disputes
  • International parties
  • Situations where confidentiality is critical

When will litigation in the courts be necessary to resolve a share purchase dispute?

Where no alternative mechanism is agreed—or where issues such as fraud or misrepresentation arise—parties may take their dispute to the courts. In England and Wales, this usually means the High Court (often the Business and Property Courts division).

Court litigation may be appropriate where:

  • No dispute resolution clause exists
  • Urgent interim relief is needed (e.g. freezing orders, injunctions)
  • The dispute involves legal issues outside the scope of expert determination
  • A party seeks a legal precedent or declaration of rights

Considerations include:

  • Public nature of proceedings
  • Potential for appeals
  • Longer timelines and higher legal costs

That said, English courts are well-respected for handling complex commercial cases efficiently—especially in the Commercial Court and Chancery Division, where judges have specialist knowledge.

At a glance: what legal protections apply to share purchase disputes?

Although the Share Purchase Agreement is the primary source of rights and obligations between the parties, English law provides additional protection where the SPA is silent, unclear or cannot fairly address the issue in dispute. Buyers and sellers may rely on statutory remedies under the Companies Act 2006, claims under the Misrepresentation Act 1967 or wider contract law principles such as misrepresentation, mistake or frustration.

Section 994 of the Companies Act 2006 offers powerful relief for shareholders who have been treated unfairly after a transaction, while the Misrepresentation Act 1967 provides remedies where a party was induced into the SPA by a false statement. Common law doctrines can assist where the contract does not reflect the true agreement or has become unworkable in practice.

Understanding how these statutory and common law protections interact with the SPA is essential, particularly where the contract contains limitations, exclusion clauses or strict notice requirements. These wider rights often provide valuable support where contractual remedies alone are insufficient.

While most share purchase disputes are governed by the terms of the Share Purchase Agreement (SPA), parties may also have rights and remedies under broader UK company and contract law. In particular, the Companies Act 2006 provides statutory protection in certain circumstances, including unfair prejudice claims.

The SPA is usually the primary source of rights and obligations in a share sale. However, English law provides a legal safety net—especially where:

  • The SPA is silent on an issue
  • The seller has acted fraudulently or oppressively
  • Shareholders’ rights are being undermined after the sale

Here are key aspects of the legal framework that may apply.

Why is the Share Purchase Agreement the primary legal document in a share sale?

The SPA forms the contractual foundation for the transaction. It outlines:

  • What has been bought and sold
  • Who is responsible for what
  • What happens if things go wrong

English courts interpret SPAs using standard principles of contract law:

  • Words are given their ordinary meaning
  • Entire agreement clauses can limit reliance on earlier discussions
  • If terms are ambiguous, courts may consider surrounding circumstances

Key points include:

  • Most warranties and indemnities must be expressly stated in the SPA
  • Courts will not imply protections unless there isclear justification
  • Boilerplate clauses like notice requirements and time limits are strictly enforced

As such, the SPA must be drafted carefully. If it lacks clarity or fails to address certain risks, statutory remedies may fill the gap—but only in limited cases.

How does section 994 of the Companies Act 2006 (unfair prejudice) protect shareholders after a share sale?

This provision allows shareholders to apply to court if they believe the company’s affairs are being conducted in a way that is unfairly prejudicial to their interests. It is a key statutory protection, especially in private companies or shareholder exits.

Section 994 of the Companies Act 2006 is often used in disputes involving:

  • Minority shareholders being excluded from management
  • Dilution of shareholdings after completion
  • Breach of legitimate expectations (e.g. to remain a director or be consulted on decisions)
  • Abuse of powers by majority shareholders

The court has broad discretion under s.994. Remedies can include:

  • Forcing the purchase of a shareholder’s shares at fair value
  • Ordering changes in company management or governance
  • Regulating future conduct of company affairs

While s.994 does not replace contractual rights under the SPA, it provides a powerful back-up where a shareholder is treated unfairly and no adequate remedy exists under the contract.

🔗 Read Section 994 of the Companies Act 2006 (legislation.gov.uk)

How does the Misrepresentation Act 1967 apply to share purchase disputes?

This Act allows a party to seek remedies where they were induced into entering a contract by a false statement. It is particularly relevant in cases of negligent or fraudulent misrepresentation, and may apply even where the SPA attempts to exclude liability.

Under the Misrepresentation Act:

  • A party may claim rescission or damages in lieu of rescission
  • The burden of proof may shift to the person who made the statement (especially in negligent misrepresentation)
  • Entire agreement clauses must be carefully worded to exclude liability—if at all

This Act is often relied upon in share purchase disputes where:

  • The SPA omits certain issues
  • The seller made verbal or informal claims
  • There are doubts about the effectiveness of exclusion clauses

🔗 Read the Misrepresentation Act 1967 (legislation.gov.uk)

Which common law contract doctrines can affect disputes under a Share Purchase Agreement?

Even outside statute, common law principles apply to share purchase transactions. These include doctrines of contract formation, frustration, and implied terms.

Examples include:

  • Mistake – where both parties are mistaken about a fundamental fact
  • Frustration – if a contract becomes impossible to perform
  • Implied terms – inserted by courts for business efficacy or legal necessity (rare in commercial SPAs)

Courts are generally reluctant to rewrite detailed, negotiated commercial agreements. However, these doctrines can provide relief where the SPA is silent, or an unforeseen event makes its terms unworkable.

They may also support claims where:

  • The contract is void or voidable
  • The parties’ conduct contradicts the written agreement
  • A remedy is needed beyond what the SPA offers

7. What real world scenarios commonly trigger share purchase disputes?

At a glance: what real world events most often lead to share purchase disputes?

Real world disputes often arise when unexpected issues surface after completion, revealing information that was not disclosed or fully understood during the sale process. Common triggers include undisclosed tax liabilities, loss of key staff or major customers, earn out underperformance, hidden regulatory problems, undisclosed litigation risk and gaps in intellectual property or property arrangements.

Many of these issues stem from weaknesses in due diligence, incomplete disclosures or assumptions about how the business would continue to operate post sale. When these assumptions prove incorrect, buyers may believe the value of the company was overstated, while sellers may argue that the risk was apparent or properly disclosed.

Spotting these patterns early helps parties understand whether a dispute is likely to succeed, what evidence will be critical and whether the SPA or disclosure letter provides a workable remedy. Clear drafting and thorough due diligence are the most effective ways to reduce these risks.

While every share purchase is different, certain patterns and risk factors recur in real-world disputes. From missed disclosures to operational breakdowns, these scenarios demonstrate how even well-drafted SPAs can be tested—and why commercial awareness and legal clarity are so important.

These examples are based on common cases we have seen at Francis Wilks & Jones and reflect how disputes can arise even after seemingly straightforward transactions. Understanding these triggers can help buyers and sellers spot red flags early and protect their position through targeted drafting and proactive due diligence.

What happens if unpaid tax liabilities emerge after a share sale?

A buyer acquires a profitable SME with clean audited accounts. Several months post-completion, HMRC initiates an investigation into underpaid VAT stretching back three years. The seller had warranted that all tax filings were up to date.

The buyer brings a breach of warranty claim under the SPA and seeks to recover the resulting tax, penalties, and interest. The seller argues that the issue was immaterial and could have been discovered during due diligence.

Outcome hinges on:

  • How the tax warranties were drafted
  • Whether the issue was disclosed
  • Time limits and caps under the SPA

If a specific tax indemnity had been included, the claim would likely be stronger and more straightforward to enforce.

What issues arise when key employees resign shortly after completion?

The buyer completes a share purchase assuming senior staff will remain in place. Within two months, both the finance director and operations manager resign – leading to a drop in performance and a loss of confidence from key clients.

The seller had warranted that there were no known risks of resignation. However, internal emails disclosed later show the seller was aware that the employees were unhappy and had recently interviewed elsewhere.

The buyer brings a misrepresentation and breach of warranty claim. The seller denies any obligation to predict staff decisions.

This kind of dispute highlights the importance of:

  • Employment warranties
  • Proper disclosure of HR issues
  • Considering earn-out structures that incentivise key staff retention

How do disputes over earn out performance arise in practice?

A buyer agrees to a £1.5 million share purchase with £500,000 deferred under an earn-out clause, dependent on meeting EBITDA targets. After completion, the seller alleges the buyer intentionally delayed a major contract to avoid triggering the earn-out.

The SPA contains a loosely worded earn-out clause but no express duty of good faith or clarity on how targets should be measured.

The seller initiates a claim alleging:

  • Bad faith conduct
  • Breach of an implied term not to frustrate the earn-out
  • Breach of post-completion operational obligations

A properly drafted earn-out clause—with defined metrics, reporting obligations, and dispute resolution—could have avoided this dispute entirely.

What if a major client terminates its contract immediately after a share sale?

A major customer accounting for 30% of revenue terminates its contract three weeks after completion. The buyer argues the seller knew of the client’s dissatisfaction and failed to disclose it.

The seller had warranted that there were “no material adverse changes” and “no intention by any major customer to terminate their business.”

The buyer seeks damages for breach of warranty and, potentially, rescission based on fraudulent misrepresentation. Internal correspondence later reveals that the client raised concerns during the due diligence period—concerns not shared with the buyer.

This case underscores the importance of:

  • Transparency during due diligence
  • Including express warranties about client relationships
  • Documenting and disclosing all commercial risks

What are the risks of undiscovered environmental breaches in a share purchase?

A buyer acquires a manufacturing company. Post-sale, the local authority serves an enforcement notice over illegal waste disposal and contamination. The seller had warranted that the company was in full regulatory compliance.

The buyer now faces:

  • Cleanup costs
  • Regulatory fines
  • Reputational damage

The seller argues that they were unaware of the issue and that no specific indemnity was requested during negotiation.

This case raises issues around:

  • The scope and drafting of environmental warranties
  • Whether the buyer conducted sufficient due diligence
  • The enforceability of any limitation clauses in the SPA

Environmental issues are often overlooked in lower mid-market deals but can result in significant long-term liabilities.

What happens if ongoing or threatened litigation was not disclosed before the sale?

A buyer acquires a company that appeared litigation-free during due diligence. Three months after completion, a third party files a claim relating to events that took place prior to the sale. The seller had warranted there was no pending or threatened litigation.

The buyer claims breach of warranty and seeks damages, arguing the seller knew or should have known about the dispute. The seller says the threat was not formalised at the time and was not “pending” under the SPA wording.

Key considerations:

  • Whether the warranty wording included “threatened” or “likely” claims
  • Whether the matter was properly disclosed
  • The SPA’s definitions of litigation and materiality

This kind of dispute highlights the importance of thorough litigation disclosure and precise drafting.

How can intellectual property ownership disputes arise after a share purchase?

After acquiring a software company, the buyer discovers that several core products are based on third-party code licensed on restrictive terms. The SPA included warranties confirming full IP ownership and that all software was developed in-house.

The buyer now faces:

  • A need to re-engineer software
  • Infringement risk
  • Potential licence breaches and client claims

They bring a breach of IP warranty claim. The seller argues the use of third-party code was common industry practice and immaterial.

This dispute underscores the need for:

  • IP audits pre-sale
  • Specific IP warranties
  • Disclosure of third-party contributions and licensing terms

What issues arise from undisclosed property or lease arrangements after a share sale?

A buyer acquires a trading company with a long-term commercial lease. Post-completion, they discover an undocumented side agreement that increases rental costs and introduces early termination rights for the landlord.

The SPA included warranties that all material contracts had been disclosed. The buyer brings a claim arguing this side agreement materially affects the company’s operating cost and security of tenure.

Disputes like this often arise where:

  • Lease variations are informally agreed
  • Licences to occupy are undocumented
  • Warranties about material contracts are narrowly drafted

Buyers should always conduct full property due diligence, even on group-owned or related-party leases.

How do inventory valuation problems lead to share purchase disputes?

A buyer in a retail or manufacturing sector disputes the valuation of stock shown in the completion accounts. Upon reviewing post-sale figures, they find much of the inventory is obsolete, unsaleable, or significantly overvalued.

The SPA included warranties that stock was properly valued and saleable in the ordinary course of business.

The buyer seeks a completion price adjustment and damages. The seller argues the stock was valued using accepted accounting policies.

This scenario demonstrates the importance of:

  • Clear definitions for “net asset value” and “stock”
  • Including completion account adjustment clauses
  • Conducting on-site inventory inspections as part of due diligence

What if company funds were misused prior to completion of the share sale?

Shortly after completion, the buyer discovers that the seller made significant pre-sale payments to personal accounts, family members, or non-commercial entities. These were not disclosed and do not appear to have a legitimate business basis.

The buyer alleges breach of warranties on financial records, proper accounting, and good faith conduct.

The seller argues the payments were historic, immaterial, or documented internally.

This type of dispute often becomes highly contentious and can involve:

  • Breach of warranty
  • Fraud or misrepresentation
  • Potential clawbacks or indemnity claims

Strong anti-leakage clauses and pre-completion review rights (especially in locked box structures) are vital for prevention.

8. Frequently asked questions about share purchase disputes

1. What is a share purchase agreement (SPA)?
2. What are common causes of share purchase disputes?
3. How do breaches of warranty lead to legal claims?
4. What is an earn-out, and why do disputes arise over it?
5. Can a buyer claim for misrepresentation after the sale?
6. What remedies are available for share purchase disputes?
7. What is expert determination?
8. What is the difference between arbitration and litigation?
9. What is section 994 of the Companies Act 2006?
10. What is a “shotgun clause” in a shareholders’ agreement?
11. What are “tag-along” and “drag-along” rights?
12. How does an SPA differ from a shareholders’ agreement?
13. Can a shareholder refuse to sell their shares?
14. What happens if shareholders cannot agree on a buyout?
15. Why is due diligence important?
16. What are notification clauses in SPAs?
17. Are there time limits for bringing warranty claims?
18. How can financial reporting lead to disputes?
19. Why is regulatory compliance important in share sales?
20. Do I need legal advice when buying or selling shares?

Key contacts

Andrew Carter

Andrew Carter

Partner

Gemma Newing

Gemma Newing

Senior Associate

Anna Beetson

Anna Beetson

Associate

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