Companies House · Rate Limits

Companies House Rate Limits

The Companies House API enforces rate limits to ensure fair use and system stability. The Public Data API allows up to 600 requests per 5-minute window per API key. The Streaming API limits accounts to 2 concurrent connections. Exceeding either limit results in HTTP 429 responses. Applications that consistently bypass or attempt to circumvent rate limits may be banned without prior notice.

Companies House Rate Limits is the machine-readable rate-limit profile for Companies House on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 2 rate-limit definitions.

Tagged areas include Companies, UK Government, Business Registration, Company Search, and Officers.

2 Limits
CompaniesUK GovernmentBusiness RegistrationCompany SearchOfficersFiling HistoryInsolvencyChargesPersons of Significant ControlOpen Data

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/companies-house-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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