Glossary/Filings & Documents/Articles of Association
Filings & Documents

Articles of Association

AoA

Articles of Association is the internal constitutional document of a UK or Commonwealth-style company, governing share rights, board powers, meetings, and decision-making.

What AoA is

The Articles of Association are the constitution of a UK or Commonwealth company - the equivalent of US corporate bylaws but with significantly more legal weight because they are filed publicly with the registrar.

Under the UK Companies Act 2006 and similar legislation in Ireland, Hong Kong, Singapore, India, BVI, Cayman, and most former Commonwealth jurisdictions, the Articles set out the rights attached to each share class (voting, dividend, redemption, liquidation preference), the rules for issuing and transferring shares, pre-emption and rights-of-first-refusal mechanics, the powers and duties of directors, board meeting procedures, written resolution rules, shareholder meeting and AGM requirements, dividend declaration mechanics, and procedures for amending the Articles themselves. UK companies can adopt the model articles prescribed by Schedule 1 of the Companies (Model Articles) Regulations 2008, modify them, or write fully bespoke articles. Venture investors investing in UK Ltds invariably require fully bespoke Articles, often paired with a separate Shareholders Agreement that contains drag-along, tag-along, and information rights. In offshore jurisdictions like the BVI and Cayman, the Articles tend to be longer because they typically cover ground that in the UK would live in a separate shareholders agreement.

When you will meet AoA

You file the Articles of Association together with the Memorandum of Association and incorporation form (IN01 in the UK, NNC1 in Hong Kong, equivalents elsewhere) when registering a Ltd company. They are then filed again whenever amended - for example after a SEIS/EIS round, a Series A, or a share-class restructuring.

Companies House and equivalent registries publish the current Articles publicly, so any investor doing UK due diligence will pull and read the latest version.

Where this comes up in our guides

Articles of Association FAQ

Functionally similar - both are internal governance documents - but Articles of Association are filed publicly with the company registrar in the UK and Commonwealth jurisdictions, whereas US bylaws are private and held in the minute book. Articles also tend to do more legal work in the UK (share rights, transfer rules) because they substitute for the share-rights provisions of a US Certificate of Incorporation.
At a glance
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Filings & Documents
Also written
AoA
Confirm current figures with the official registry or a qualified adviser before relying on them.
Related terms
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Sources
  1. 1UK Companies House - Filing Articles of Association
  2. 2UK Companies Act 2006 Section 18 - Articles of Association
  3. 3Hong Kong Companies Registry - Articles of Association Guidance
Definition reviewed March 2026.
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