UK Companies House

API

Official UK government API for Companies House data

Overview

The UK Companies House API provides RESTful access to official UK government data on registered companies, including registration details, status, directors, filing histories, accounts, and beneficial ownership. Endpoints support retrieving company profiles, officer lists, filing documents, and checking company existence. Responses are in JSON format. Use cases include business verification for financial services, due diligence for legal firms, market research to analyze industry trends, and building applications to track company changes or monitor director appointments.

Example Integration (JavaScript)

script.js JS


fetch('https://developer.company-information.service.gov.uk/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful
JSON Support
API Key Authentication
Company Profiles
Officer Lists
Filing History

Frequently Asked Questions

? Is UK Companies House free to use?

Yes, the API offers a free tier with rate limits; paid plans are available for higher volume usage.

? Does it require an API Key?

Yes, you need to register for an API key via the Companies House developer portal to access the API.

? What is the response format?

All responses are in JSON format, ensuring easy integration with most applications.

Top Alternatives

OpenCorporates API Search Google

Tool Info

Pricing Freemium

Category Government

Platform Public API

Pros

⊕ Official government data source
⊕ Comprehensive company and officer details
⊕ Well-documented
⊕ Free basic access

Cons

⊖ Rate-limited free tier
⊖ Requires API key registration
⊖ No SLA for free users
⊖ Some data may not be real-time