Companies House

Companies House Public Data API

The Companies House Public Data API provides read access to all publicly available company information registered at Companies House. It covers company profiles, registered office addresses, officer appointments, persons with significant control, filing history, charges, insolvency, and advanced search across all registered UK companies. Access is free and requires only an API key obtained from the Companies House Developer Hub.

GitHub OpenAPI

Documentation

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Documentation
https://developer-specs.company-information.service.gov.uk/companies-house-public-data-api/reference

Specifications

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OpenAPI
https://github.com/companieshouse/specs.developer.ch.gov.uk
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OpenAPI
https://raw.githubusercontent.com/api-evangelist/https://raw.githubusercontent.com/api-evangelist/companies-house/refs/heads/main/apis.yml/refs/heads/main/openapi/companies-house-public-data-openapi.yml

Schemas & Data

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JSONSchema
https://raw.githubusercontent.com/api-evangelist/https://raw.githubusercontent.com/api-evangelist/companies-house/refs/heads/main/apis.yml/refs/heads/main/json-schema/

Other Resources

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Examples
https://raw.githubusercontent.com/api-evangelist/https://raw.githubusercontent.com/api-evangelist/companies-house/refs/heads/main/apis.yml/refs/heads/main/examples/companies-house-examples.json

OpenAPI Specification

specs.developer.ch.gov.uk Raw ↑