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
If you are raising seed money for a UK company, two clauses in your shareholders' agreement will do a lot of heavy lifting the day someone makes an offer to buy the business. Drag-along and tag-along rights sit quietly in the paperwork for years, then suddenly decide who can sell, who must sell, and on what terms.
I have seen founders surprised by both, often because the mechanics were glossed over during the funding round. This guide walks through what each clause actually does, how they interact with UK company law, and the practical points that matter when you are negotiating a seed term sheet.
It is written for founders, angel investors, and early shareholders who want to understand the trade-offs before signing, rather than work them out later when a buyer is at the door.
Overview
Drag-along and tag-along rights are contractual provisions, usually found in a shareholders' agreement or a company's articles of association. They kick in when someone offers to buy shares in the company, and they control what happens to the shareholders who are not part of the initial deal.
A drag-along clause lets a defined group of shareholders, often those holding a set majority percentage, force the remaining shareholders to sell their shares to the same buyer on the same terms. The purpose is to deliver the buyer a clean 100 per cent of the company, which is what most trade buyers want.
A tag-along clause works the other way. If majority shareholders agree to sell to a third party, minority shareholders can choose to join the sale on equivalent terms, rather than being left behind with a new and unfamiliar controlling shareholder.
The two clauses sit side by side because they protect opposite interests: one helps the majority achieve an exit, the other protects the minority from being stranded.
Key steps
Read the threshold carefully. The drag-along clause will specify a percentage of shareholders needed to trigger it, often 50, 75 or 90 per cent. Check whether the threshold is calculated by share class, by voting rights, or by nominal value, because each produces a different outcome in a seed-stage cap table.
Check what 'same terms' actually means. Both clauses usually require that dragged or tagging shareholders receive the same price per share and the same form of consideration. Look for carve-outs around warranties, indemnities, and whether minority shareholders can be asked to give personal undertakings they would not normally accept.
Understand the notice mechanics. Drag and tag clauses contain tight timeframes for serving notices, accepting the offer, and completing the transfer. Missing a deadline can mean losing the right to tag, or being bound by a drag on terms you had not fully digested. Map the timeline before you sign.
Look at interaction with the articles. If the shareholders' agreement and the articles of association say different things, the articles usually win on matters of share transfer. Make sure both documents are aligned, and that any transfer restrictions or pre-emption rights do not block the drag or tag when the time comes.
Think about future funding rounds. A drag threshold that works at seed may become unsuitable after Series A dilutes everyone. Consider whether the clause should be refreshed at each round, and whether founders should retain a blocking stake or a class-based consent right to prevent a forced sale on unfavourable terms.
Q Are drag-along rights legally enforceable in the UK?
Yes, they are enforceable as a matter of contract and company law, provided they are properly drafted and included in either the shareholders' agreement or the articles of association. Courts in England and Wales will generally enforce a drag-along clause that has been freely agreed between shareholders, although a badly drafted or oppressive clause can be challenged. The exact wording matters a great deal.
Q What percentage is usually needed to trigger a drag-along?
There is no fixed percentage in UK law. In practice, seed-stage drag-along clauses often require a simple majority or a qualified majority of shareholders, sometimes with a separate consent from founders or lead investors. Higher thresholds protect minority shareholders, while lower ones give the majority more flexibility to force a sale. The right level depends on the cap table and the investors involved.
Q Can a founder be dragged out of their own company?
In principle, yes, if the drag-along clause applies to founder shares and the threshold is met. This is one reason founders should negotiate the drag mechanics carefully during a seed round. Some deals include a founder consent requirement or a minimum sale price below which the drag cannot be exercised, to stop a forced sale at a disappointing valuation.
Q Do tag-along rights apply to every share sale?
Not usually. Tag-along clauses typically apply only when a sale would transfer control of the company, or when the shares being sold exceed a stated percentage. Small share transfers between existing shareholders, or transfers to family members and connected parties, are often carved out. Always check the definition of a 'triggering transfer' in the document.
Q Where should these clauses live: articles or shareholders' agreement?
They can appear in either, and often appear in both. Including them in the articles makes them binding on all current and future shareholders automatically, which is useful at exit. The shareholders' agreement can add more detailed mechanics, confidentiality, and remedies. In a well-drafted seed package the two documents are cross-referenced and consistent.
Q What happens if I refuse to comply with a valid drag-along notice?
Most drag-along clauses contain a power of attorney or deemed-signature mechanism, allowing the company or a nominated person to sign the transfer documents on behalf of a non-cooperating shareholder. That means refusing to sign does not usually block the sale. It may also expose the shareholder to a breach of contract claim from the other parties.
Q Do EIS or SEIS investors get special treatment under these clauses?
The tax reliefs themselves do not require special drag or tag terms, but investors relying on SEIS or EIS often want tag-along protection so they can exit alongside the majority. Poorly drafted drag provisions can also cause issues if they are treated as preferential rights. It is worth reviewing the clauses against the relief conditions before finalising the round.
Drag-along and tag-along clauses can shape what happens to your stake years after the ink dries, and the wording in seed paperwork varies hugely. An experienced legal adviser can help you think through what the clauses mean for your position based on what you describe on the call.
✓A plain-English walkthrough of how drag and tag clauses operate
✓Practical perspective on the thresholds and mechanics you describe
✓Points to watch out for in your specific situation
✓Clarity on your next steps before signing a term sheet or shareholders' agreement
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.