How Companies House identifies records of historical value for archival preservation.

How to send information to Companies House using third party software or by developing your own software.

What to do if you’re a company director or an accountant who has to pay a penalty to Companies House for filing your company accounts late.

Information on the quality of Companies House official statistics, to help you decide whether to use our data.

Definitions for the main terms used in Companies House official statistics publications, to help you understand the statistics and what they cover.