Alex is Sprintlaw’s co-founder and principal lawyer. Alex previously worked at a top-tier firm as a lawyer specialising in technology and media contracts, and founded a digital agency which he sold in 2015.
Do I need a lawyer to buy a business? For most serious business purchases, yes - at least to review the deal before you sign anything binding.
That doesn't mean every small purchase needs a huge legal process. If you're buying a few second-hand assets from another business, you may only need a simple written agreement and basic checks. But if you're buying a trading business with staff, premises, customer data, supplier contracts, intellectual property or a company behind it, legal review can protect you from taking on problems you didn't price into the deal.
The key is matching the legal work to the risk. A cafe purchase isn't the same as buying a SaaS company, and an asset sale isn't the same as buying shares in a limited company.
Do I Need A Lawyer To Buy A Business?
Usually, yes, if you're buying more than just equipment or stock. A lawyer helps you work out what you're actually buying, what liabilities you might inherit and what needs to happen before completion.
The risk level depends heavily on the deal structure.
Lower Risk Purchases
You may be able to keep things fairly simple if you're only buying:
- Specific equipment, furniture or stock
- A domain name or social media accounts
- A small customer list, where the data protection position is clear
- A trading name, where no formal trade mark is involved
Even then, you should still have a short written asset purchase agreement that says what is being sold, the price, when ownership transfers and what happens if something isn't as described.
Higher Risk Purchases
Legal help becomes much more important if the deal includes:
- A commercial lease or premises licence
- Employees who may transfer under TUPE
- Supplier, customer or franchise agreements
- Trade marks, software, copyright or other intellectual property
- Customer databases or personal data covered by the UK GDPR and Data Protection Act 2018
- A limited company, rather than just its assets
- Deferred payments, earn-outs or seller finance
In those deals, a small wording issue can have a very practical consequence. For example, if the sale agreement doesn't properly transfer the website code, brand assets or trade mark, you may pay for a business but still struggle to use the brand you thought you bought.
When Is Legal Review Critical Before You Sign?
Legal review is critical before you sign if the document commits you to buy, pay a deposit or take on obligations you can't easily walk away from. This includes heads of agreement or heads of terms if they contain binding clauses, not just the final sale agreement.
You should get advice before exchange or completion where any of the following apply.
You're Buying Shares In A Company
If you buy shares, you're buying the company with its history. That can include debts, contracts, employee claims, tax issues, data protection problems and Companies Act 2006 compliance gaps.
You won't always see those risks from the outside. A share purchase agreement should include warranties, disclosure and completion steps that help you identify and allocate those risks.
There Are Staff In The Business
If you're buying a business as a going concern, the Transfer of Undertakings Protection of Employment Regulations 2006, usually called TUPE, may transfer employees to you automatically. This can bring across their continuity of employment, pay, holiday, benefits and potential claims.
You'll want to check employment contracts, holiday records, disciplinary issues, pensions information and whether the seller has carried out the required employee information and consultation steps.
The Premises Matter To The Deal
If the business relies on a shop, cafe, salon, workshop or office, the lease can make or break the purchase. You need to know whether the landlord's consent is needed, how long is left on the lease, whether there's a break clause, what rent reviews apply and whether the current use is allowed.
Don't assume you can simply take over the premises because the seller runs the business there now.
What Should A Lawyer Check Before Exchange Or Completion?
A lawyer should check the legal parts of the business that affect value, risk and your ability to keep trading after completion. The aim isn't to slow the deal down. It's to make sure you're not buying surprises.
For an asset purchase, this usually means checking that the seller owns the assets and can transfer them to you. For a share purchase, it means checking the company itself, including its obligations and records.
Key Legal Checks
- Ownership: Does the seller actually own the assets, shares, website, trade marks, equipment and stock?
- Contracts: Can customer and supplier contracts be assigned or transferred, or do you need consent?
- Employees: Will TUPE apply, and what employee liabilities are coming across?
- Premises: Is there a lease assignment, new lease or licence to occupy, and has the landlord approved it?
- Intellectual property: Are trade marks registered with the UK IPO, and are copyright or software rights properly assigned?
- Data protection: Can customer and marketing data be transferred lawfully under the UK GDPR?
- Consumer obligations: If the business sells to consumers, are refunds, returns and terms aligned with the Consumer Rights Act 2015?
- Company records: For a share sale, do Companies House filings, registers and board approvals line up?
- Licences and permits: Are any alcohol, food, music, industry or local authority licences needed, and can they transfer?
Say Maya is buying a small hair salon for GBP 65,000. She plans to pay a GBP 10,000 deposit, take over the lease and keep four staff.
Before signing, legal due diligence finds that the salon's trade mark is owned personally by the seller, not the company selling the business. The lease also has only 14 months left, with no automatic renewal, and two employees have unused holiday that hasn't been factored into the price.
Maya doesn't have to walk away. But she can ask for the trade mark assignment to be completed, make landlord consent a condition of completion and adjust the purchase price or completion accounts for the holiday liability. That's the difference between buying confidently and inheriting problems on day one.
What Documents Do You Need To Buy A Small Business?
You normally need a business sale agreement, plus supporting documents for the specific assets, staff, lease, intellectual property and data being transferred. The exact pack depends on whether you're buying assets or shares.
Templates can be a useful starting point, but business purchase documents work best when they're tailored to the deal. A cafe with staff and a lease needs different protections from an online store with customer data and supplier contracts.
Business Purchase Agreement Outline
If you're looking at a draft agreement, these are the sections you would usually expect to see.
- Parties: Name the buyer, seller and any guarantor or company involved.
- Sale Assets Or Shares: List exactly what you're buying and what is excluded.
- Purchase Price: Set out the price, deposit, payment timing and any adjustments.
- Completion Conditions: State what must happen before completion, such as landlord consent or contract assignments.
- Warranties: Include promises about ownership, accounts, contracts, staff, disputes, IP and compliance.
- Disclosure: Record any exceptions to the warranties that the seller has told you about.
- Employees: Deal with TUPE, employee transfer information, consultation, holiday pay and liabilities.
- Lease Or Premises: Explain how the premises will be transferred or made available to you.
- Intellectual Property: Transfer trade marks, copyright, domain names, social accounts and brand assets.
- Data And Records: Cover customer data, privacy notices, marketing consents and business records.
- Restrictive Covenants: Stop the seller from immediately competing or poaching staff or customers, where reasonable.
- Completion Deliverables: List what each side must hand over at completion.
- Post-Completion Help: Set out any training, handover period or seller support.
- Default And Termination: Explain what happens if someone doesn't complete or breaches the agreement.
You may also need separate documents, such as a lease assignment, deed of assignment for intellectual property, board minutes, stock transfer forms, Companies House filings, novation agreements, confidentiality agreement and updated customer terms.
How Much Does A Business Purchase Lawyer Cost?
The cost depends on the deal size, structure and risk. A simple asset purchase is usually much easier to review than a share purchase involving staff, premises, finance and several key contracts.
The main cost drivers are:
- Whether you're buying assets or shares
- How many contracts, employees and licences need review
- Whether a lease needs to be assigned or negotiated
- How much due diligence is needed
- Whether the other side's lawyer negotiates heavily
- Whether completion is urgent
- Whether you need extra documents, such as IP assignments or novations
You have a few common options.
Free Template
A free template may feel attractive for a very small asset purchase, but it won't check whether the seller owns what they're selling or whether TUPE, data protection, a lease or contract consents apply. The risk is that you save money upfront but miss something expensive.
Online Fixed-Fee Legal Service
An online legal team can often review or prepare the key documents for a fixed fee, so you know the cost before you commit. This can work well for small business purchases where you want practical legal help without the overhead of a larger transaction team.
Traditional Hourly Billing
A traditional firm may charge by the hour, which can be useful for complex transactions but harder to budget for. If you go down this path, ask what is included, who will do the work and when fees may increase.
Whichever option you choose, ask for clarity on scope. A useful quote should tell you whether it includes document drafting, review, due diligence questions, negotiation, completion support and any post-completion steps.
Buying A Small Business Legal Checklist
Your legal checklist should help you decide whether the business is safe to buy, whether the price still makes sense and what must happen before completion. Work through it before you pay a non-refundable deposit or sign a binding agreement.
- Confirm The Deal Structure: Are you buying assets, shares, or a franchise business? The legal risks are different.
- Sign A Confidentiality Agreement: Use one before the seller gives you financials, staff records, customer lists or supplier information.
- Check The Seller's Authority: Make sure the seller owns the business or has proper company approval to sell.
- Review The Financials With Your Accountant: Ask your accountant to check accounts, VAT, PAYE and other HMRC matters.
- List The Assets: Record equipment, stock, domain names, social accounts, IP, software, vehicles and records.
- Review Key Contracts: Check assignment rights, termination rights, pricing, exclusivity and change of control clauses.
- Check Employees And TUPE: Get employee liability information, contracts, pay, holiday, benefits and any workplace issues.
- Review The Lease: Confirm term, rent, rent review, repair obligations, break rights, permitted use and landlord consent.
- Check IP And Branding: Search UK IPO records for trade marks and confirm who owns copyright, designs and software.
- Check Data Protection: Review privacy notices, lawful bases, marketing consents, data sharing and security practices.
- Agree Warranties And Indemnities: Use them to allocate risk if something the seller says turns out to be wrong.
- Plan Completion: Prepare payments, handover, keys, passwords, notices, filings and announcements.
If you're buying shares, there may also be Companies House updates, board approvals and stock transfer forms. Stamp duty can apply to share transfers, so ask your accountant to confirm the HMRC process and timing for your deal.
One final point: don't let commercial excitement rush the legal steps. If the seller is pushing for a fast completion, you can still protect the deal by making key items conditions of completion rather than hoping they'll be fixed later.
Key Takeaways
- You don't always need a large legal process, but most real business purchases need legal review before you sign.
- The biggest risks usually come from staff, leases, contracts, intellectual property, data and hidden company liabilities.
- Asset purchases and share purchases are very different, so your legal checks should match the deal structure.
- A good sale agreement should clearly state what you're buying, what the seller promises and what must happen before completion.
- Costs depend on complexity, so ask exactly what is included before you choose a lawyer or legal service.
- Legal review is most useful early, before a deposit becomes non-refundable or a problem becomes yours.
If you'd like help with reviewing a business purchase agreement, checking legal risks before completion, preparing transfer documents or working through staff, lease and IP issues, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.
Drafted by Taylor, Sprintlaw's AI, and overseen by Alex Solo. How we write
Control the transaction before completion
What should the buyer or seller line up next?
Deal structure, due diligence, liabilities, employee and contract transfers, approvals and completion mechanics need to work as one transaction.








