Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice.
Updated June 2026 · England & Wales
Buying or selling a business in the UK is rarely a simple transaction. There are commercial terms to agree, warranties to negotiate, a stack of legal paperwork to work through, and a long list of things that can go wrong between a handshake and completion.
A corporate solicitor is the person who sits on your side of the table through all of it, translating the jargon, pushing back on unreasonable terms, and making sure what ends up in the final contract actually reflects the deal you thought you were doing. This page walks through what a corporate solicitor typically does during a company sale or purchase, why their role matters, and what to think about before you instruct one.
If you want to talk through your situation before making any decisions, you can book a call with an experienced legal adviser at the bottom of this page.
Overview
A corporate solicitor is a qualified lawyer who works on business transactions and company law matters. Their work covers share sales, asset sales, mergers, joint ventures, investments, shareholder disputes, and the ongoing legal housekeeping that limited companies need to stay on the right side of the Companies Act 2006.
In the context of buying or selling a business, a corporate solicitor typically runs the legal side of the deal from start to finish. That means drafting and negotiating the sale and purchase agreement, co-ordinating due diligence, dealing with the other side's solicitors, handling Companies House filings, and getting the transaction across the line at completion.
They are different from a commercial solicitor, who focuses on day to day business contracts, and different again from a litigator, who deals with disputes. If your deal is straightforward and low value, you may not need heavyweight corporate support.
If shares are changing hands, if there are multiple sellers, or if the price is material to you, proper legal input tends to pay for itself.
Key steps
Scoping the deal and agreeing heads of terms. Before any serious legal work starts, a corporate solicitor will want to understand what is being bought or sold, how the price is structured, and what the commercial logic is. They will often review or draft heads of terms, sometimes called a letter of intent, which sets out the key points the parties have agreed in principle. Most of it is not legally binding, but it sets the tone for everything that follows.
Running or responding to due diligence. If you are buying, your solicitor will send a detailed due diligence questionnaire to the seller, asking for information on contracts, employees, property, intellectual property, litigation, tax, and regulatory matters. If you are selling, they will help you gather and present that information in a disclosure bundle. The point is to surface any issues before contracts are signed, not after.
Negotiating the sale and purchase agreement. The SPA is the main contract. It sets out the price, the payment structure, any deferred consideration or earn out, the warranties given by the seller, and the indemnities that sit alongside them. This is where most of the legal time and cost goes. A good corporate solicitor will push hard on the points that genuinely protect their client and let the trivial ones go, rather than fighting every comma.
Preparing ancillary documents and board approvals. Alongside the SPA, there will usually be a disclosure letter, stock transfer forms, board minutes, shareholder resolutions, service agreements for directors staying on, restrictive covenants, and sometimes a tax deed. A corporate solicitor prepares these, circulates them for signing, and makes sure nothing critical is missed before completion.
Completing the transaction and dealing with post completion matters. On completion day, funds move, documents are signed or dated, and ownership formally passes. After completion, your solicitor handles the Companies House filings, updates the statutory books, notifies HMRC where needed, and deals with any conditions that had to be satisfied after the deal closed. This tidy up stage is easy to underestimate but important to get right.
Q Do I actually need a corporate solicitor to sell my small business?
You are not legally required to use one, but most sellers find the protection is worth the cost. A corporate solicitor helps you understand what warranties you are giving, limits your exposure where possible, and spots clauses that could come back to bite you years after completion. For very small asset sales you may get away with a simple contract, but once shares, employees or meaningful sums are involved, going it alone tends to be a false economy.
Q What is the difference between a share sale and an asset sale?
In a share sale, the buyer purchases the shares in the company and takes on the whole legal entity, including its history, contracts, liabilities and tax position. In an asset sale, the buyer picks specific assets and usually leaves the company, and most of its liabilities, with the seller. Buyers often prefer asset sales for the clean break. Sellers often prefer share sales for the cleaner exit and potential tax treatment.
Q How long does a typical business sale take?
It varies a lot, but most UK SME sales take somewhere between three and six months from heads of terms to completion. Due diligence is usually the longest phase. Deals can move faster if the business is well organised and the parties are aligned, and slower if there are regulatory consents, property matters, complex tax issues, or multiple shareholders with different views on the terms.
Q What are warranties and indemnities in plain English?
Warranties are statements the seller makes about the business, such as confirming there is no ongoing litigation or undisclosed tax liability. If a warranty turns out to be untrue and the buyer suffers loss, they can claim damages. An indemnity is a pound for pound promise to reimburse the buyer for a specific known risk, such as a pending tax enquiry. Indemnities are stronger protection for the buyer than warranties.
Q Does the company need to file anything at Companies House after a sale?
Usually yes. After a share sale, the register of members needs updating, the next confirmation statement will reflect the new shareholders, and if directors change, AP01, AP03 or TM01 forms need filing. If there is a new person with significant control, that also needs to be notified. Your corporate solicitor typically handles these filings as part of post completion work.
Q What is a disclosure letter and why does it matter?
A disclosure letter sits alongside the SPA and lists exceptions to the warranties the seller is giving. If something is properly disclosed in it, the buyer generally cannot later claim for breach of warranty on that point. For sellers, the disclosure letter is one of the most important documents in the whole deal because it shapes their post completion risk.
Q Can I speak to someone before I commit to instructing a solicitor?
Yes. You can book a call with an experienced legal adviser through this page. The call is a chance to talk through your situation, understand the shape of the transaction you are considering, and get a practical perspective on what to think about next, based on what you describe. It does not replace instructing a solicitor for the deal itself, but it can help you walk into that conversation better prepared.
Corporate transactions have a lot of moving parts, and the choices you make early on shape how the whole deal plays out. An experienced legal adviser can help you think through what to expect and what to watch out for, based on what you describe on the call.
✓Plain-English answers to your specific questions about the transaction
✓A practical perspective on the key risks based on what you describe
✓Clarity on the typical steps for a sale or purchase in your situation
✓Help thinking through what to line up before instructing a solicitor
Personal call · For information only · Independent advisers
Written & reviewed by
Brad Askew Solicitor (non-practising)
Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.