How to Prepare for VC Funding in the UK: A Complete Legal Due Diligence Checklist for Startups
Raising venture capital (“VC”) is an exciting milestone, but VC funding also acts as a legal stress test for your startup. Before a VC fund or angel syndicate completes an investment, it will usually carry out due diligence to verify the company’s structure, ownership, contracts, intellectual property, people, compliance and risk profile.
This article explains what UK startup legal due diligence involves, what investors commonly ask for, what problems can delay funding and how to prepare your company before the data room opens. It is written for founders, directors and senior team members who want to make their startup more investment-ready and avoid preventable legal issues during a funding round.
What is legal due diligence in a UK VC funding round?
Legal due diligence is the process by which an investor, usually with support from its lawyers and internal team, reviews the legal foundations of your business before completing an investment. In simple terms, the investor wants to confirm that the company owns what it says it owns, its records are accurate, there are no hidden legal liabilities and the investment can be completed safely.
In a UK startup funding round, legal due diligence usually sits alongside financial, tax, commercial and technical due diligence. The legal review commonly covers the company’s constitutional documents, share capital, shareholder arrangements, intellectual property, employment and consultancy contracts, commercial contracts, data protection, regulatory compliance, disputes, insurance and historic filings.
The process often starts after a term sheet has been signed, although founders should prepare earlier where possible. A term sheet sets out the main commercial terms of the investment, such as valuation, investment amount, share class, investor rights and completion conditions. Although many term sheets are partly non-binding, they often create momentum and expectations, so unresolved legal issues discovered only after terms have been agreed can create delay, tension or renegotiation.
Why investors ask for legal due diligence before investing
VC investors accept risk, but they do not want avoidable legal risk. They want confidence that the company has been properly set up, the founders have authority to issue shares, key assets belong to the company and there are no legal issues likely to undermine the investment.
Due diligence also helps investors satisfy their own internal approval processes and duties to funders or investment committees. It can directly shape the investment documents if risks are identified, with investors potentially requesting additional warranties, indemnities, completion conditions, founder undertakings or post-completion remedial steps.
A warranty is a contractual statement that certain facts are true. An indemnity is a promise to reimburse the investor for a specific loss if a defined risk materialises. These are common investor protections that allow the investor to seek compensation if the company is found to be in breach of a warranty or if a specific risk emerges.
When should a startup prepare for VC funding due diligence?
The best time to prepare is before you need the money. Once a funding round is live, founders are often managing investor calls, financial modelling, customer demands, team issues and negotiation of the investment documents, so trying to fix legal gaps at the same time can be stressful and expensive.
Ideally, a startup should review its legal position several weeks before opening a formal data room. A data room is a secure online folder where documents are uploaded for review by investors and their advisers. The aim is not to create unnecessary bureaucracy, but to ensure the documents an investor expects to see are complete, consistent and easy to understand.
Companies House records are particularly important because they are public and easy for investors to check. Every UK company, including dormant and non-trading companies, must file a confirmation statement at least once every 12 months to confirm that the information held by Companies House is up to date. If the public register does not match your cap table, share records or investor presentation, this can create immediate concern.
What documents do investors usually review before VC funding?
There is no single universal due diligence list because each investor, sector and deal structure is different. However, most UK VC funding rounds involve a review of the same broad legal areas.
Corporate records and company structure
Investors will usually ask for the company’s certificate of incorporation, articles of association, statutory registers, board minutes, shareholder resolutions, Companies House filings and details of any subsidiaries. They will also want to understand who the directors, shareholders and persons with significant control are, and whether the company has authority to issue the proposed investment shares.
Capitalisation and share ownership
The cap table is one of the most important documents in a VC round. It should show who owns the company before and after investment, including founders, employees, option holders, existing investors and new investors. Investors will also review previous share issues, options, convertible loan notes, advance subscription agreements, warrants and side letters that may affect ownership or dilution.
Founder arrangements
Investors will want to see that founder arrangements are clear, stable and properly documented. This may include founder service agreements, vesting arrangements, leaver provisions, restrictive covenants and any side agreements between founders. These documents help investors assess whether the founding team is properly incentivised and tied into the business.
Intellectual property
For many startups, intellectual property is the core asset. Investors will want evidence that the company owns or has valid rights to use its software, branding, product designs, domain names, content, patents, trademarks, databases and confidential information. This is particularly important where founders, contractors or agencies have helped create the product or brand.
People, contracts and compliance
Employment, consultancy and incentives
Investors will review employment contracts, consultancy agreements, offer letters, staff handbooks, option schemes and bonus or commission arrangements. They will want comfort that key employees and consultants are engaged on appropriate terms, and that confidentiality, IP ownership and termination provisions are properly dealt with.
Commercial contracts
Customer contracts, supplier agreements, partnership arrangements, reseller agreements, SaaS terms, platform terms and standard terms and conditions are commonly reviewed. Investors want to understand where revenue comes from, whether key contracts are enforceable and whether important relationships can be terminated, transferred or affected by the investment.
Data protection and cybersecurity
Data protection is especially important for SaaS, fintech, healthtech, edtech, AI, marketplace and consumer-facing businesses. Investors may ask for privacy notices, cookie policies, data processing agreements, records of processing, security policies and evidence that the company understands how it collects, stores, uses and shares personal data.
Regulatory compliance
If the startup operates in a regulated sector, investors will want to know whether licences, registrations or permissions are required. This may be relevant to fintech, financial promotions, payments, lending, cryptoassets, insurance, health, medical devices, recruitment, education, gambling, food, energy and similar sectors.
Disputes, liabilities and insurance
Investors will ask whether the company is involved in litigation, threatened claims, settlement discussions, unpaid debts, tax disputes, customer complaints or regulatory investigations. They may also review insurance policies, including professional indemnity, cyber, employer’s liability, public liability and directors’ and officers’ insurance.
The most common legal problems found in startup due diligence
Many due diligence issues are not caused by bad faith. They often arise because early-stage companies move quickly, rely on informal arrangements and postpone legal housekeeping until a funding round forces the issue.
The cap table does not match the company records
A mismatch between the company’s internal cap table, statutory registers and Companies House filings is a common red flag. It may arise because shares were promised but never issued, approvals were not documented or filings were submitted incorrectly. These issues can often be fixed, but they may require resolutions, ratifications, updated registers and careful explanation to the investor.
Intellectual property ownership is unclear
Founders often assume that work created for the business automatically belongs to the company, but that is not always correct. If a freelancer, agency, adviser or founder created software, branding, designs, technical materials or content without a valid written assignment, the company may not own the relevant rights. This can be particularly serious where the disputed IP is central to the product or valuation.
Key contracts are unsigned, outdated or inconsistent
Startups sometimes rely on draft contracts, email chains, unsigned terms or outdated templates. This can create uncertainty around payment, termination, liability, confidentiality, data processing and ownership of deliverables. Investors prefer a clear contractual position because it reduces ambiguity and helps them assess revenue and operational risk.
People and data issues
Employee and consultant documents are weak
Early team members may have joined on informal terms, especially where cash was limited or the business was moving quickly. Missing contracts, unclear notice periods, weak confidentiality provisions and absent IP clauses can all create investor concern. This is especially important where the individual is central to product development, sales or customer relationships.
Data protection has been treated as a template exercise
Many startups have a privacy policy but have not checked whether their actual data practices match it. Investors increasingly want to see that the company understands what personal data it collects, why it uses it, where it is stored, who has access to it and which third-party processors are involved. This is particularly important where the product uses AI tools, processes sensitive data, monitors users, transfers data internationally or relies heavily on external platforms.
What happens if due diligence uncovers a problem?
A due diligence issue does not automatically stop a funding round. Its impact depends on how serious it is, whether it can be fixed, how quickly it can be resolved and whether it changes the investor’s view of risk.
Many issues can be dealt with before completion, for example by obtaining missing signatures, updating statutory registers, filing overdue forms, entering into IP assignments or approving amended articles. Other issues may be addressed through completion conditions, warranties, indemnities or post-completion undertakings.
More serious issues can affect commercial terms. An investor may reduce valuation, require more control rights, insist on founder vesting, delay completion, hold back funds or decide not to proceed. Early preparation gives the company more time to fix issues calmly and preserve negotiating leverage.
How long does VC legal due diligence take?
The timeline depends on the size of the round, the complexity of the company, investor expectations and the quality of the documents. A straightforward seed round for a well-prepared company may move quickly, while a Series A or later round involving multiple investors, regulated activity, complex IP or overseas operations will usually take longer.
The biggest delays tend to come from missing documents, unresolved ownership issues, slow responses, unclear cap tables and negotiation of investor protections. Founders should avoid promising a completion date until the main legal and commercial points have been addressed, and should allow time for board and shareholder approvals, Companies House filings, investor KYC (identity and anti-money-laundering checks), tax input, SEIS or EIS considerations and execution of the final documents.
Can due diligence affect SEIS or EIS investment?
Yes, it can. Many UK startup funding rounds are structured with SEIS or EIS in mind, but eligibility depends on detailed rules relating to the company, trade, investor, timing, shares and use of funds.
Investors may ask whether the company has obtained advance assurance from HMRC, whether previous funding affects the relevant limits and whether the proposed share rights are compatible with SEIS or EIS. Advance assurance is not a guarantee of relief, but it can give investors useful comfort that HMRC is likely to accept the proposed investment structure on the basis of the information supplied.
If SEIS or EIS is important to the round, it should be considered early. Changing share rights, investor documents or funding mechanics late in the process can cause delay, so it is sensible to address these points before documents are finalised.
Practical legal steps to prepare for VC funding
You should not wait until an investor asks for documents before thinking about due diligence. A short pre-funding legal review can reveal issues that are much easier to resolve before the round becomes time-sensitive.
- Review the company’s constitutional documents: check the articles of association, shareholder agreements and any investor rights from previous rounds. Identify whether existing shareholders have consent rights, pre-emption rights, information rights or veto rights that could affect the new investment.
- Clean up the cap table: make sure the cap table accurately reflects issued shares, options, convertible instruments and any promised equity. Address informal share promises before investor due diligence begins, as inconsistencies can delay negotiations and create difficult conversations with employees, advisers or former founders.
- Secure IP assignments: identify everyone who has contributed to the company’s software, product, brand, website, designs, technical documentation or other core assets. Check that written IP assignments are in place, particularly for contractors, agencies and founders who created IP before formal contracts were signed.
- Update employment and consultancy contracts: ensure employees and consultants have appropriate written contracts covering confidentiality, intellectual property, termination rights and, where relevant, post-termination restrictions. These provisions should be tailored to the role and seniority of the individual, rather than copied from a generic template.
Contracts, data and the data room before VC funding
- Review customer and supplier terms: check that key customer and supplier contracts are signed, current and commercially acceptable. Pay particular attention to termination rights, liability caps, service commitments, exclusivity, assignment, change of control and data processing terms, especially where the contract is material to revenue or operations.
- Prepare a data protection pack: gather key data protection documents, such as privacy notices, cookie policies, data processing agreements, records of processing, security policies, breach procedures and details of important processors. If the business transfers personal data internationally or uses AI tools, consider these areas carefully before investor questions are raised.
- Prepare a short issues note: if there are gaps or historic issues, consider preparing a short, accurate note explaining the position and proposed solution. Investors are used to early-stage companies having imperfect records, but late disclosure or unclear explanations can undermine confidence.
- Organise the legal data room: create a clear folder structure covering corporate records, share capital, investment history, IP, employment, commercial contracts, finance, data protection, regulatory matters, disputes and insurance. Avoid duplicate or unexplained versions of documents, as this can create confusion about which version is operative.
- Check consistency across investor materials: your pitch deck, financial model, cap table, Companies House filings and legal documents should tell the same story. If the deck says the company owns proprietary technology, the legal documents should support that, and if the cap table shows an adviser option pool, the underlying option documents should be available.
How the Jonathan Lea Network can help startups prepare for VC funding
Jonathan Lea Network (“JLN”) advises startups, scaleups, founders and investors on UK fundraising rounds, including SEIS/EIS rounds, seed investments, angel syndicates and venture capital transactions. Our corporate team supports ambitious businesses raising Series A, B and C funding with deal structuring, due diligence, investment documents and completion.
We can help you prepare before investor due diligence by reviewing company records, identifying legal gaps, improving your data room, resolving cap table issues, checking intellectual property ownership, advising on founder arrangements, updating articles of association, preparing shareholder approvals and coordinating completion, working alongside your accountants and tax advisers where SEIS, EIS, EMI options or other tax-sensitive issues are involved.
Early legal input can protect deal momentum, avoid late-stage surprises and reduce the risk of issues being raised for the first time by an investor’s lawyers, especially where the round includes liquidation preferences, anti-dilution rights, founder vesting, board control, consent matters, warranties, restrictive covenants, investor information rights or SEIS/EIS requirements.
Frequently asked questions: prepare for VC funding
It is a review of your company’s legal foundations by the investor and its lawyers before they invest. They want to confirm that the company owns what it says it owns, its records are accurate, there are no hidden legal liabilities and the investment can be completed safely. It usually runs alongside financial, tax, commercial and technical due diligence, so it pays to get your documents in order before the data room opens. Ideally, before you need the money. A good rule is to review your legal position several weeks before you open a formal data room. Once a funding round is live, founders are busy with investor calls, financial modelling and negotiating the investment documents, and fixing legal gaps at the same time can be stressful and expensive. Start by checking that your Companies House records, cap table and share records all match. There is no single list, but most UK VC rounds cover the same areas: corporate records and Companies House filings, the cap table and share history, founder arrangements, intellectual property, employment and consultancy contracts, commercial contracts, data protection, regulatory compliance, disputes and insurance. Put these into a clear data room folder structure and avoid duplicate or unexplained versions, so it is obvious which document is the one in force. Common issues include a cap table that does not match the statutory registers or Companies House filings, unclear ownership of intellectual property, unsigned or outdated key contracts, weak employee and consultant documents, and data protection treated as a template exercise. Most arise because early-stage companies move quickly and postpone legal housekeeping, not because of bad faith. Many can be fixed, but they are much easier to resolve before the round becomes time-sensitive. Independent valuation advice can help provide a basis for negotiation. The parties should also consider debt, cash, property, working capital, shareholder loans, future investment needs and liabilities when assessing a fair outcome. Not automatically. The impact depends on how serious the issue is, whether it can be fixed, how quickly, and whether it changes the investor’s view of risk. Many issues are dealt with before completion, for example by obtaining missing signatures, updating registers or entering into IP assignments. More serious issues can lead an investor to reduce the valuation, ask for more control rights, delay completion or decide not to proceed. Not necessarily. Founders often assume that work created for the business automatically belongs to the company, but that is not always correct. If a freelancer, agency, adviser or founder created software, branding, designs or content without a valid written assignment, the company may not own the rights. Identify everyone who has contributed to your core assets and check that written IP assignments are in place before investor due diligence begins. The biggest delays usually come from missing documents, unresolved ownership issues, slow responses, unclear cap tables and negotiating investor protections. A well-prepared company on a straightforward seed round may move quickly, while a Series A or later round usually takes longer. Avoid promising a completion date until the main legal and commercial points are settled, and allow time for approvals, Companies House filings, investor identity checks, tax input and signing. They can. SEIS and EIS eligibility depends on detailed rules about the company, trade, investor, timing, shares and use of funds, and investors may ask whether you have HMRC advance assurance. Advance assurance is not a guarantee of relief, but it can give investors useful comfort. If SEIS or EIS matters to your round, consider it early, because changing share rights or investment documents late in the process can cause delay. A warranty is a contractual statement that certain facts are true. An indemnity is a promise to reimburse the investor for a specific loss if a defined risk materialises. Both are common investor protections. If due diligence identifies risks, investors may ask for additional warranties or indemnities, completion conditions or founder undertakings. Preparing early gives the company more time to fix issues calmly and preserve its negotiating leverage.
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This article is intended for general information only, applies to the law at the time of publication, is not specific to the facts of your case and is not intended to be a replacement for legal advice. It is recommended that specific professional advice is sought before relying on any of the information given. © Jonathan Lea Limited.