Companies House API
developer.company-information.service.gov.ukUK Companies House REST API for company profiles, officers, filings and search over the public register.
What your agent can do
Look up UK company registry data (profile, officers, filing history) and search companies by name or number.
Via API.
Tasks depend on the interface and permissions.
Connection methods
Choose a route that fits your agent.
API
For custom integrations
an API key
Docs checkedView paths for APIAPI connection
API path
https://api.company-information.service.gov.uk/company/00000006- Authentication
- the Companies House API takes the username as the API key and ignores the password, so can be left blank.