If you want to draft a shareholder agreement for a UK start up, don’t start by copying a long template. Start by deciding what problems you’re trying to avoid. Most start-ups need the agreement for one reason: people change, and the business needs rules for when that happens.
A shareholder agreement is a private contract between the shareholders (and often the company too). It sits next to your Articles of Association. The Articles are the company’s base rulebook. The shareholder agreement is the “how we’ll actually work together” rulebook.
In This Article
What a good agreement actually does
A good one answers these questions in plain terms:
- Who decides what?
- What happens if someone leaves?
- What happens if you raise money?
- What happens if you sell the business?
If your agreement doesn’t answer those, it won’t help when you need it.
Step 1: Write the ownership clearly
Start with the simple facts. Who owns shares, what percentage each person has, and if you have different share types (like ordinary and preference shares). If you’re not sure about sharing classes, don’t guess. Keep it to one class until you get proper advice.
If you’re asking how to draft a shareholder agreement for a UK start up because you’re about to bring in a co-founder or investor, this section needs to match your cap table exactly. No “about 50/50” wording. Make it precise.
Step 2: Set decision rules people can live with
Next, set how decisions get made. In most start-ups:
- Directors run day-to-day decisions.
- Shareholders approve the big moves.
So you add a list of “reserved matters”. This is where you stop surprises. Think about things that could change the business fast, like issuing new shares, taking on large debt, selling key assets, changing the Articles, or selling the company.
The point here is simple: you don’t want someone to make a huge decision without the right level of agreement.
Step 3: Control who can own shares
Now deal with share sales and transfers. Start-ups usually don’t want a shareholder selling to a stranger, a competitor, or a difficult person.
A common rule is: if someone wants to sell, the other shareholders get the first chance to buy at the same price. That keeps control inside the business. You can also restrict transfers completely unless the board or shareholders approve.
This part matters more than most founders think. A bad shareholder can cause years of stress.
Step 4: Protect against surprise dilution
If you plan to raise money, you need clear rules for new shares. When a company issues new shares, existing shareholders often want the chance to buy enough to keep their percentage. That’s what “pre-emption rights” are for.
You can also write how these rights get switched off when you do a funding round, so you don’t get stuck when an investor is ready to move.
If you keep only one thing in mind, keep this: raising money is normal. Confusion about dilution is not.
Step 5: Plan the exit before you need it
This is the part that stops deals falling apart.
A buyer often wants to buy 100% of the company. So you add drag-along rights. That means if a set majority agrees to sell, everyone sells on the same terms.
You also add tag-along rights. That protects smaller shareholders. If the majority sell, the minority can join the sale on the same deal.
This is one of the main reasons people ask how to draft a shareholder agreement for a UK start up. You’re not being dramatic. You’re being realistic.
Step 6: Deal with leavers properly
Founders leave. Key people leave. Sometimes it’s friendly. Sometimes it isn’t.
Your agreement should say what happens to someone’s shares if they stop working in the business. Many start-ups use “good leaver” and “bad leaver” rules. The label affects the price they get for their shares and the process for buying them back.
This is also where vesting can come in, so equity is earned over time. Don’t DIY complicated vesting wording. Get it reviewed.
Step 7: Sort money and funding expectations
If shareholders might need to put money in later, write down how that works. Who has to contribute? Is it optional? What happens if someone can’t pay?
If you don’t write this down, you’ll get conflicted the first time cash gets tight.
Step 8: Add a simple dispute and deadlock process
Disagreements happen. The agreement should give you a calm way to handle them.
Start simple: talk first, then mediation, then legal action as a last step. If you have a 50/50 ownership split, add a deadlock rule. Without one, the company can freeze when you need decisions most.
The final bit most people miss
After you draft the shareholder agreement, check your Articles. If the agreement says one thing and the Articles say another, you’ve built a future argument.
Then get a UK solicitor to review it before anyone signs. You can draft the structure yourself, but you want enforceable wording, not “sounds right” wording.
Your Next Step
Contact us today at 0121 268 3208 or via email at info@onyxsolicitors.com for a FREE consultation. Let us help you achieve the peace of mind that comes with having expert legal support on your side.
