Developer's API suite

API Products

Companies House offers several API products to enable you to get the best out of the company information held at Companies House.

Companies House identity service

Companies House identity and authentication service.

Companies House Public Data API

An API suite providing read only access to search and retrieve public company data

Document API

API suite providing company filing history document metadata and downloads.

Manipulate Company Data (API Filing)

An API suite that allows clients to manipulate company information, if they have authority to do so.

Sandbox Test Data Generator API

Sandbox API suite to generate test data on demand

Streaming API

A streaming API giving access to real time data changes.