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Phone: (UK) +44 (0)203 405 2320
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Posting documents to Companies House (CH)

From 4 March 2024, all companies who want to file paper documents will need to post them to the Cardiff office:

Companies House
Crown Way
CF14 3UZ


CH will not accept post or hand deliveries at the Belfast office from 4 March 2024. Since September 2023, companies registered in Scotland post their documents to the Cardiff office.

Most companies can file online instead of posting paper documents. 

By filing online, you will: 

  • save your company time and money;
  • get confirmation that we’ve received your submission; 
  • avoid rejects and be less likely to get late filing penalties; and
  • get access to additional online services. 

CH will continue to accept post in the Belfast office until 1 March 2024. If you post documents to the Belfast office after 1 March 2024, your documents will be re-directed, and they will take longer to reach the Cardiff office.  

Over 65% of companies now use software filing as their preferred method.

There are a variety of software providers which offer a range of accounting packages to prepare and file accounts. Most types of accounts can be filed using software, depending on the functionality of the software package you are using.

If you file using our online services, CXH will send you an email to confirm they have received your accounts. They will also send you another email when they have registered your accounts.

To file online, you may need your company authentication code. If you need to request a new code, you should allow up to 5 days for this to arrive at the company’s registered office.

Anyone filing with Companies House should understand their legal responsibilities and duties of being a company director, including the responsibility to file documents on time.

See: Posting documents to Companies House – GOV.UK (

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