How to Amend Articles of Association: UK Companies Act Process

A UK private company limited by shares can amend its articles of association at any time — but only by special resolution of the members and only by following the procedure prescribed in the Companies Act 2006. Getting the procedure right is the difference between a clean amendment that registers at Companies House on the next business day and a defective amendment that exposes the directors to personal liability and the corporation to enforcement action. This article, from a Gyoseishoshi (行政書士) document-preparation perspective, walks through the Companies Act 2006 sections 21, 26, 29, and 30 procedure, with all the source URLs.

1. The statutory framework

Under Companies Act 2006 s.21(1):

“A company may amend its articles by special resolution.”

Under CA 2006 s.283, a special resolution requires:

• A vote in favor of at least 75% of the members entitled to vote and voting on the resolution at a general meeting, OR
• A written resolution signed by members representing at least 75% of the eligible votes

Under CA 2006 s.26, a copy of the amended articles, together with the special resolution, must be filed with the Registrar of Companies within 15 days after the amendment takes effect.

Primary source — Companies Act 2006: https://www.legislation.gov.uk/ukpga/2006/46/contents

2. Step 1 — Decide on the amendment

Common reasons to amend articles:

• Convert from model articles to bespoke articles (commonly done after first investment round)
• Add or remove share classes (e.g., introduce non-voting “B” shares for employees)
• Add or amend dividend rights
• Add transfer restrictions (right of first refusal, drag-along, tag-along)
• Change directors’ meeting quorum or voting rules
• Add or remove redemption / convertible features on shares
• Update to current company law standards (e.g., remove Pre-2006 references)

The bigger the substantive change, the more careful the drafting should be. Adding a share class affects existing shareholders’ rights and may require a separate class consent under CA 2006 s.630 in addition to the special resolution.

3. Step 2 — Draft the new articles

Either:

• Replace the entire articles document (the cleaner approach for substantial amendments), OR
• Add an amendment resolution that modifies specific articles (the lighter approach for minor changes)

For multi-shareholder companies, replacing the entire articles document with a clean version is strongly preferred. Companies House requires the full new articles to be filed, so partial amendments still result in a complete replacement at the registry level.

The model articles for private companies limited by shares are at The Companies (Model Articles) Regulations 2008:

Primary source — Companies (Model Articles) Regulations 2008: https://www.legislation.gov.uk/uksi/2008/3229/contents

4. Step 3 — Identify any class consent issues

Under CA 2006 s.630, if the proposed amendment varies the rights attached to a class of shares (e.g., reduces the dividend preference of preferred shares, introduces dilution-protection on common shares), the variation requires either:

• Written consent of holders of three-fourths of the class’s nominal value, OR
• Special resolution passed at a separate meeting of the class shareholders

The general 75% special resolution does not override the s.630 class consent requirement. A common drafting error is to obtain a 100% special resolution from the company (which inherently passes the class) and assume the class consent is satisfied — only true if the class shareholders represent the requisite supermajority of their class.

5. Step 4 — Convene the general meeting (or written resolution)

For a general meeting:

1. Issue notice of meeting to all members per CA 2006 s.307
   • Private company: at least 14 clear days notice (s.307(1))
   • Notice must include the text of the proposed special resolution and identify it as a special resolution
2. Hold the meeting
3. Vote — the resolution passes if 75% of votes cast are in favor

For a written resolution (private companies only, under CA 2006 Ch.2 Pt.13):

1. Distribute the proposed resolution to all eligible members
2. Include the proposed new articles
3. Members signify agreement by signing or by electronic communication
4. Resolution passes when 75% of total eligible voting rights agree
5. Members have 28 days from the circulation date to agree (CA 2006 s.297)

The written resolution is dramatically more efficient for closely-held private companies and is the dominant practice in 2026.

6. Step 5 — File with Companies House within 15 days

Under CA 2006 s.26 and s.30, within 15 days of the resolution being passed, the company must file with Companies House:

Filing fee: Free for the resolution and articles upload via Companies House webfiling.

Primary source — Companies House WebFiling: https://www.gov.uk/file-changes-to-a-company-with-companies-house

7. Step 6 — Update internal records

The internal update is often forgotten. The Companies House register is updated automatically; the company’s own records must be updated by the company secretary or director.

8. Common pitfalls

9. The 15-day rule and CA 2006 s.30 penalties

Under CA 2006 s.30(3), failure to file the resolution and new articles within 15 days is an offence committed by the company and every officer in default. The penalty under s.30(4) is a fine on conviction. While prosecution is rare for one-off late filings, repeat or material non-compliance is taken seriously.

Practical rule: file on the next business day after the resolution. There is no benefit to delaying.

10. Example timeline — bespoke articles after seed round

Assume a UK Ltd company raising a seed round and adopting bespoke articles to introduce A and B share classes.

11. Special considerations for guarantee companies and CICs

For companies limited by guarantee (typically charities and community organizations) and Community Interest Companies (CICs), additional rules apply:

• CIC asset-lock provisions under the Community Interest Company Regulations 2005 cannot be removed by amendment
• Charity articles registered with the Charity Commission may require Charity Commission consent before amendment under the Charities Act 2011 s.198

If your company falls into either category, get specific advice — the standard CA 2006 procedure is necessary but not sufficient.

12. Re-registration as a different type

A more substantial change than amendment of articles is re-registration of the company type — for example, private to public under CA 2006 Pt.7. Re-registration is a different process involving the Registrar’s specific consent and is outside the scope of articles amendment. Use Companies House Form RR01–RR06 for re-registration.

Primary source — Companies House guidance: https://www.gov.uk/government/organisations/companies-house

13. After-the-fact remedy for defective amendments

If a special resolution was passed but found defective (e.g., notice was 13 days instead of 14), CA 2006 s.301 allows a member to apply to the court for confirmation of the resolution. The court has discretion to confirm if no prejudice resulted. This is a costly and uncertain path; the prevention is to follow the procedure precisely on the front end.

14. Scrib🐮-prepared amendment package

A clean amendment package, prepared with Scrib🐮, contains:

1. ☐ Notice of general meeting (or written resolution circulation letter)
2. ☐ Special resolution text identifying the resolution as a “special resolution under section 21 of the Companies Act 2006”
3. ☐ Full new articles of association document (clean version, not redline)
4. ☐ Class consent forms (if any class rights are varied)
5. ☐ Companies House cover letter or webfiling submission
6. ☐ Internal minute book entry template
7. ☐ Updated register of members (if share classes change)

Filed within 15 days, registered within 1 business day, and updated in the corporation’s internal records the same week — that’s the post-amendment standard.

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Disclaimer

Legal information, not legal advice. MmowW Scrib🐮 is operated by a licensed Gyoseishoshi (行政書士) office in Japan. We are not UK solicitors.

Sources

1. Companies Act 2006 — https://www.legislation.gov.uk/ukpga/2006/46/contents
2. Companies (Model Articles) Regulations 2008 — https://www.legislation.gov.uk/uksi/2008/3229/contents
3. Companies House — https://www.gov.uk/government/organisations/companies-house
4. Companies House WebFiling — https://www.gov.uk/file-changes-to-a-company-with-companies-house
5. Companies Act 2006 s.21 — https://www.legislation.gov.uk/ukpga/2006/46/section/21
6. Companies Act 2006 s.26 — https://www.legislation.gov.uk/ukpga/2006/46/section/26
7. Companies Act 2006 s.283 (special resolutions) — https://www.legislation.gov.uk/ukpga/2006/46/section/283
8. GOV.UK Running a Limited Company — https://www.gov.uk/running-a-limited-company