Closing your first funding round: a practical paperwork guide for UK startups

You’ve agreed a term sheet with an investor. That’s a big moment. But a term sheet isn’t a binding commitment to invest. You still need to turn that heads-of-terms into a set of definitive documents, get them signed and file everything correctly. This post walks through the essential paperwork you’ll handle when closing a typical equity funding round for a UK startup.

It’s not legal advice. Every round is different, and you should always work with a solicitor who understands early-stage investment. Use this as a plain-English orientation so you know what you’re signing and why.

The core documents

For a straightforward equity round (new ordinary shares or seed preferred shares), there are usually four or five key documents. They might be separate agreements or combined into a single investment agreement, but the substance is the same.

Subscription agreement (or investment agreement)

This is the contract between the investors and your company. It sets out how much they’re investing, how many shares they’ll receive, the price per share and any conditions that must be satisfied before money changes hands. It also includes warranties from the founders and/or the company about the business’s state, capped in the UK by a limitation of liability clause. The subscription agreement is where you’ll pin down the mechanics: how and when completion happens, where the cash is sent, and what happens if things go wrong pre-completion.

Shareholders’ rights or investors’ rights agreement

If your round brings in institutional investors, you’ll often have a separate shareholders’ agreement or an amended version of your existing one. This covers investor consent rights, board appointment rights, information rights, drag-along and tag-along provisions, and any special protective provisions (veto rights over key decisions). It supplments the articles of association. If you incorporated only recently and have a small cap table, you might simply adopt a new set of articles that includes these rights, rather than a standalone agreement.

New articles of association

Your articles will need updating to reflect the new share class rights, investor director appointment rights, consent matters and transfer restrictions. This is typically done by special resolution. If you’ve already adopted bespoke articles in the past, make sure the new ones are a clean superseding version, not a patchwork of amendments.

Disclosure letter

The disclosure letter is the company’s (and founders’) side of the warranty story. It’s your opportunity to draw the investor’s attention to facts and documents that would otherwise breach a warranty. For example, if you warrant that all intellectual property is owned outright, but you’re licensing a key technology from a third party, you’d disclose that licence here. Getting this letter right is just as important as the warranties themselves. A good solicitor will help you prepare a set of thorough, honest disclosures to limit your exposure.

Board minutes and shareholder resolutions

You need board minutes approving the round, the issuance of shares, the calling of any shareholder meeting (or proposing written resolutions) and any ancillary transactions like adopting new articles. You’ll also need shareholder resolutions – often by written resolution – to approve the new articles, authorise the directors to allot the shares and disapply pre-emption rights where necessary. For most UK startups, you can hold a combined board and shareholder meeting in short order, or simply circulate written resolutions to all shareholders.

The completion checklist

Completion is the point when documents are signed, executed and exchanged, and the investment money arrives. A typical order of events:

1. Conditions precedent satisfied. The subscription agreement may require you to deliver certain items before the investor is obliged to complete, such as a signed service agreement for a founder, evidence of IP assignments, or a board decision to appoint an investor director.
2. Execution of transaction documents. All parties sign the subscription agreement, new articles, shareholders’ agreement and any board minutes/resolutions. Use electronic signatures if you’re comfortable, but make sure everyone’s execution methods comply with the company’s articles (see our guide on electronic signatures for details).
3. Board meeting. The board resolves to allot the new shares and enters the investors in the register of members. You’ll issue share certificates (often PDFs sent by email on completion) and update the register of allotments.
4. Money in the bank. The investor sends the subscription amount to the company’s client account (or a solicitor’s account, if they’re handling the flow). Once cleared, you can confirm completion.
5. Filings at Companies House. After completion, you have a few deadlines: Form SH01 (return of allotment) within one month. The new articles must be filed within 15 days of the special resolution being passed. If you’ve appointed or removed directors, file those changes promptly on Form AP01 or TM01, within 14 days.
6. Update statutory registers. Record the new shareholders, share amounts and any new directors in your company’s register of members, register of directors and register of persons with significant control (PSC). Make sure the PSC register reflects who now has more than 25% control, including any investors.
7. Post-completion jointers. If new investors are joining an existing shareholders’ agreement, they’ll sign a deed of adherence. If you’ve entered into a new investment agreement, you might not need one, but check.

Common pitfalls for small startups

• Rushing the disclosure letter. Founders often treat it as a formality. It isn’t. Spend time documenting anything that might breach a warranty, no matter how trivial it seems.
• Forgetting to disapply pre-emption rights. Unless your articles or a shareholders’ resolution disapply them, existing shareholders have a statutory right of first refusal when you issue new shares. For a new investor round, you need a special resolution to disapply, passed by at least 75% of voting shares.
• Not updating the cap table immediately. An out-of-date cap table leads to mistakes in future rounds. Reflect the new shares, including any separate share classes, as soon as completion wraps up.
• Failing to keep board minutes consistent. Your board must formally resolve to allot the shares and issue certificates; even a single-director company should keep a written minute.
• Missing Companies House deadlines. Late filing can trigger penalties and affect your compliance record – something later investors will review.

When you might need extra documents

• Investor director appointment letter. If an investor gets a board seat, set out their duties and time commitment, and confirm they’re bound by the company’s conflicts policy. A board appointment letter or a short service contract can help.
• IP assignment confirmatory deeds. If during due diligence you discovered loose IP assignments, you’ll often need to get those signed and delivered as a condition of completion.
• Restrictive covenant agreements. If the investor requires co-founders to enter into new service agreements with non-compete clauses, these need to be finalised before or at completion.

Again, none of this is legal advice. Your solicitor will draft and guide you through each document. But understanding the mechanics in advance means you’ll know what’s coming, ask better questions and keep the close moving. At StartupDocs, we’ve built template packs and AI tools to help you prepare the foundational documents that sit underneath a funding round – such as a clean cap table, up-to-date board minutes and IP ownership records – so that when your round does come, you’re not scrambling to reconstruct the basics.