aid: https://raw.githubusercontent.com/api-evangelist/companies-house/refs/heads/main/apis.yml
name: Companies House
description: >
  Companies House is the UK government executive agency and trading fund responsible
  for incorporating and dissolving limited companies and registering company information
  in Great Britain. The Companies House REST API provides a free, open, and standardised
  way to search and retrieve company registration data, including company profiles,
  officer appointments, persons of significant control, filing history, charges, and
  insolvency records. Developers can also access a real-time Streaming API that delivers
  changes to Companies House data as they happen, enabling applications to stay up-to-date
  without polling. Authentication is handled via API key using HTTP Basic Auth, and all
  access is provided free of charge with a generous rate limit.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/companies-house/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'
tags:
  - Companies
  - UK Government
  - Business Registration
  - Company Search
  - Officers
  - Filing History
  - Insolvency
  - Charges
  - Persons of Significant Control
  - Open Data
apis:
  - name: Companies House Public Data API
    description: >
      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.
    image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
    humanURL: https://developer.company-information.service.gov.uk/overview
    baseURL: https://api.company-information.service.gov.uk
    tags:
      - Companies
      - Officers
      - Filing History
      - Charges
      - Insolvency
      - PSC
      - Search
    properties:
      - type: Documentation
        url: https://developer-specs.company-information.service.gov.uk/companies-house-public-data-api/reference
      - type: OpenAPI
        url: https://github.com/companieshouse/specs.developer.ch.gov.uk
      - type: OpenAPI
        url: openapi/companies-house-public-data-openapi.yml
      - type: JSONSchema
        url: json-schema/
      - type: Examples
        url: examples/companies-house-examples.json
    contact:
      - FN: Companies House Developer Forum
        url: https://forum.companieshouse.gov.uk/

  - name: Companies House Streaming API
    description: >
      The Companies House Streaming API delivers real-time changes to Companies House
      data via long-running HTTP connections. It streams updates across nine data
      categories including company information, filing history, insolvency, charges,
      officers, persons with significant control, disqualified officers, exemptions,
      and PSC statements. Each account is limited to two concurrent streaming connections
      and requires an API key for authentication.
    image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
    humanURL: https://developer-specs.company-information.service.gov.uk/streaming-api/guides/overview
    baseURL: https://stream.companieshouse.gov.uk
    tags:
      - Streaming
      - Real-Time
      - Companies
      - Officers
      - Filing History
    properties:
      - type: Documentation
        url: https://developer-specs.company-information.service.gov.uk/streaming-api/guides/overview
    contact:
      - FN: Companies House Developer Forum
        url: https://forum.companieshouse.gov.uk/

common:
  - type: AgenticAccess
    url: agentic-access/companies-house-agentic-access.yml
  - type: VulnerabilityDisclosure
    url: security/companies-house-vulnerability-disclosure.yml
  - type: DomainSecurity
    url: security/companies-house-domain-security.yml
  - type: Authentication
    url: authentication/companies-house-authentication.yml
  - type: Website
    url: https://www.gov.uk/government/organisations/companies-house
  - type: Documentation
    url: https://developer.company-information.service.gov.uk/overview
  - type: GitHubOrg
    url: https://github.com/companieshouse
  - type: LinkedIn
    url: https://www.linkedin.com/company/companies-house
  - type: Blog
    url: https://companieshouse.blog.gov.uk
  - type: Pricing
    url: https://developer.company-information.service.gov.uk/overview
  - type: StatusPage
    url: https://forum.companieshouse.gov.uk/c/api-changes/7
  - type: X
    url: https://x.com/CompaniesHouse
  - type: Forums
    url: https://forum.companieshouse.gov.uk
  - type: Authentication
    url: https://developer-specs.company-information.service.gov.uk/guides/authorisation
  - type: Plans
    url: plans/companies-house-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/companies-house-rate-limits.yml
  - type: FinOps
    url: finops/companies-house-finops.yml
  - type: Vocabulary
    url: vocabulary/companies-house-vocabulary.yml
  - type: JSONLDContext
    url: json-ld/companies-house-context.jsonld
  - type: BlogRSS
    url: https://companieshouse.blog.gov.uk/feed/
  - type: BlogIndex
    url: blogs/blogs.json

maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com