Under the Companies Act 2006, all private limited companies registered in the UK are required to adopt certain legal documents which include:
Memorandum of association
This document cannot be changed once the company is incorporated. This defines the company, including elements such as:
You can use the memorandum of association template from Gov.UK. Once the company has been registered you cannot update the memorandum.
Articles of association
The articles of association set out the rules according to which a company must be run and administered. They regulate a variety of matters such as:
You can use standard articles which can be found on Gov.UK model articles
These cover:
You can write your own articles but, if you do, you cannot register your company online.