Whether you are looking to grow your business through acquisition, combine forces with another company, or sell to a larger organisation, mergers and acquisitions (M&A) represent some of the most significant transactions a business can undertake. Getting the process right is critical, and understanding the basics puts you in a far stronger position from the outset.
This guide explains what M&A means in practice, how these deals are structured, what the process involves, and where legal advice from our corporate law solicitors can help protect your interests and drive the best possible outcome.
What are mergers and acquisitions?
The terms merger and acquisition are often used together, but they describe distinct types of transaction.
A merger occurs when two businesses combine to form a single, new entity. In a true merger, both businesses come together on broadly equal terms. In practice, however, many deals described as mergers are actually acquisitions, with the label of a merger applied for commercial or reputational reasons.
An acquisition (sometimes called a takeover) occurs when one company purchases another. The acquiring company absorbs the target, which may continue to operate under its existing name or be fully integrated into the buyer’s business.
Together, M&A activity covers a broad range of corporate transactions, from small owner-managed business sales to complex multi-jurisdictional deals. For founders, investors and business owners, understanding how these transactions work is the first step to navigating them effectively.
Types of M&A
Not all M&A follow the same structure. The main categories include:
- Horizontal M&A: two businesses operating in the same sector combine, often to increase market share or reduce competition
- Vertical M&A: a business acquires another at a different stage of its supply chain, for example a manufacturer buying a distributor
- Conglomerate M&A: businesses in unrelated industries combine, typically to diversify revenues or reduce commercial risk
Understanding which type of transaction applies to your situation helps shape the strategy, deal structure and any regulatory considerations from the outset.
Asset purchase vs share purchase
One of the most important structural decisions in any company acquisition is whether it proceeds as an asset purchase or a share purchase.
Asset purchase
In an asset purchase, the buyer acquires specific assets and, in some cases, liabilities of the target business. This might include equipment, contracts, intellectual property and staff, but the buyer can negotiate what is included and what is left behind. This structure is popular where the buyer wants to limit exposure to the target’s historical liabilities.
Share purchase
In a share purchase, the buyer acquires the shares of the target company, taking ownership of the entire legal entity along with all its assets and liabilities. This is a more straightforward structure in some respects, but the buyer takes on the full history of the business, which makes thorough due diligence essential.
The right structure depends on commercial objectives, tax considerations and the risk profile of the target business. Legal and tax advice at this stage shapes the entire transaction and should not be left until later.
The M&A process: what to expect
Most M&A transactions follow a broadly similar process, though timelines and complexity vary considerably depending on deal size, sector and structure.
Preparation and confidentiality
Early discussions are typically governed by a non-disclosure agreement (NDA), which prevents either party from disclosing confidential information shared during negotiations. This protects both sides while allowing substantive conversations to take place.
Due diligence
Due diligence is the process by which the buyer investigates the target business before committing to the deal. It covers legal, financial, commercial and operational matters. Sellers who prepare thoroughly for this stage can accelerate the process and support a stronger valuation.
Heads of terms
Once the main commercial terms are agreed in principle, the parties typically sign heads of terms. Save as noted below, these are not usually legally binding, but they record what has been commercially agreed and provide a framework for the substantive legal documents that follow. Certain provisions, such as exclusivity and confidentiality, are often expressly stated to be legally binding.
The purchase agreement
The main transaction document, whether a share purchase agreement (SPA) or an asset purchase agreement (APA), sets out the full terms of the deal. This includes the price, payment structure, warranties and indemnities, any pre or post-completion conditions and any bespoke terms.
Warranties are contractual statements of fact made by the seller about the state of the business. If a warranty proves to be inaccurate (and decreases the value of the shares acquired), the buyer may have a claim for compensation.
An indemnity is a contractual promise by the seller to reimburse the buyer (on a pound-for-pound basis), for specific liabilities or losses that the target business might incur post-acquisition. Indemnities are typically included only for identified or known risks uncovered during due diligence.
Post-completion
Once the deal completes, a period of integration and administration typically follows. This may include notifying clients and suppliers, updating company registers, and managing any deferred consideration or earn-out arrangements.
Key legal and regulatory considerations
Competition law
Larger transactions may require review by the Competition and Markets Authority (CMA), the UK’s primary competition regulator. The CMA has the power to investigate and block mergers and acquisitions that it considers would substantially reduce competition in a market. Most SME transactions do not reach the relevant thresholds, but advice is worthwhile where significant market share is involved.
National security
The National Security and Investment Act 2021 introduced a mandatory notification regime for certain acquisitions in sensitive sectors, including technology, energy and defence. Buyers and sellers in these areas must notify the government before completing a transaction.
TUPE
Where employees transfer as part of the deal, the Transfer of Undertakings (Protection of Employment) Regulations 2006 (TUPE) may apply. TUPE protects the employment rights of transferring staff and imposes consultation obligations on both parties.
Failure to comply can result in claims and additional liabilities. Generally speaking, TUPE tends to be more of a consideration on asset purchases rather than sale purchases but advice should still be sought in either case.
Frequently asked questions
What is the difference between a merger and an acquisition?
A merger combines two businesses into a new, unified entity on broadly equal terms. An acquisition is where one company purchases another. In practice, the distinction is often blurred: many transactions described as mergers are structured and function as acquisitions.
How long does an M&A transaction take?
Most transactions take several months from initial discussions to completion. Simpler deals between smaller businesses may complete more quickly, while complex or regulated transactions can take considerably longer. Thorough preparation, particularly on the seller’s side, can help reduce delays.
Do I need a solicitor for a business merger or acquisition?
Yes. M&A transactions involve significant legal, financial and commercial risk. A solicitor with experience in mergers and acquisitions law will help you structure the deal correctly, negotiate effectively and protect your position throughout the process.
What is due diligence in M&A?
Due diligence is the investigation carried out by a buyer into a target business before completing a transaction. It covers areas including legal contracts, financial performance, taxation, intellectual property, corporate structure, employment matters, regulatory compliance and litigation history. The aim is to identify risks and inform the final deal terms.
What are warranties in an M&A transaction?
Warranties are contractual statements made by the seller about the condition of the business being sold. If a warranty is found to be inaccurate (and decreases the value of the shares acquired) after completion, the buyer may be entitled to claim compensation. Negotiating the scope and limitations of warranties is one of the most important stages of any M&A transaction.
How Ignition Law can support your transaction
M&A transactions are complex, high-stakes and time-sensitive. The legal framework matters, but so does commercial judgement at every stage of the process.
At Ignition Law, our corporate law team works with founders, owner-managers and investors on the full spectrum of M&A activity. Whether you are acquiring a competitor, selling your company, or exploring a merger, we can help you navigate the process with clarity and confidence.
Contact Ignition Law to discuss your transaction and find out how we can help you get the deal done.
