Companies House

You can access UK company data through a dedicated MCP server that exposes Companies House endpoints to MCP clients. This server consolidates 45+ endpoints for company information, searches, officers, filings, PSC data, and financial details, enabling you to build powerful queries and workflows against UK company records from your MCP-enabled tools.

How to use

Install the MCP server locally or run it directly to start querying Companies House data. You can perform comprehensive searches, retrieve detailed company profiles, examine filing histories, inspect officers and PSC information, and access financial details such as charges. Use MCP clients to call the available endpoints and assemble workflows that fit your needs.

How to install

Prerequisites: you need Node.js and npm installed on your system. You can verify Node.js is installed by running node -v and npm by running npm -v.

Option 1: Run the MCP server using npx (recommended for quick start)

npm install -g companies-house-mcp-server

npx companies-house-mcp-server

Option 2: Build from source and run locally

git clone https://github.com/stefanoamorelli/companies-house-mcp.git
cd companies-house-mcp
npm install
npm run build

Then run using the compiled file:

{
  "mcpServers": {
    "companies-house": {
      "command": "node",
      "args": ["/absolute/path/to/companies-house-mcp/dist/index.js"],
      "env": {
        "COMPANIES_HOUSE_API_KEY": "your_api_key_here"
      }
    }
  }
}

Configuration and API key

You must provide an API key to access Companies House data. Obtain your key by registering at the Companies House Developer Hub and creating an application, then use that key in your MCP client configuration.

# Example Claude Desktop configuration using npx
{
  "mcpServers": {
    "companies-house": {
      "command": "npx",
      "args": ["-y", "companies-house-mcp-server"],
      "env": {
        "COMPANIES_HOUSE_API_KEY": "your_api_key_here"
      }
    }
  }
}

Security and rate limits

The MCP server relies on your API key to authenticate with the upstream Companies House API. Be mindful of API rate limits: up to 600 requests per 5 minutes per API key. Some endpoints may have additional restrictions.

Build from source and run notes

If you prefer building from source, you can run the build process and then start the local server with the produced JavaScript file. Include the required environment variable for the API key in your startup configuration.

Available tools

search_companies

Search for companies by name or company number with pagination and filtering.

get_company_profile

Retrieve detailed information for a specific company, including profile data and key dates.

get_registered_office_address

Fetch the registered office address for a given company Number.

get_registers

Access information about company registers.

get_insolvency

Retrieve insolvency information for a company.

get_exemptions

Fetch exemptions disclosures for a company.

get_uk_establishments

Get UK establishments for foreign companies.

advanced_company_search

Perform advanced searches with multiple filters for more precise results.

search_all

Search across all resource types for broader discovery.

search_officers

Find company officers by name with pagination.

search_disqualified_officers

Search for disqualified officers by name.

alphabetical_search

Search companies by name prefix alphabetically.

dissolved_search

Find dissolved companies by query.

get_officers

Get list of company officers with options for register type and pagination.

get_officer_appointment

Retrieve details for a specific officer appointment.

get_officer_appointments_list

List all appointments for an officer.

get_corporate_officer_disqualification

Fetch corporate officer disqualification details.

get_natural_officer_disqualification

Fetch natural person disqualification details.

get_filing_history

Get a company’s filing history with category filtering and pagination.

get_filing_history_item

Get a specific filing item’s details.

get_charges

Retrieve a list of company charges.

get_charge_details

Get details for a specific charge.

get_persons_with_significant_control

List PSCs for a company.

get_psc_individual

Get individual PSC details.

get_psc_corporate_entity

Get corporate PSC details.

get_psc_legal_person

Get legal person PSC details.

get_psc_statements_list

Fetch PSC statements.

get_psc_statement

Get a specific PSC statement.

get_psc_individual_beneficial_owner

Retrieve individual PSC beneficial owner details.

get_psc_individual_verification

Retrieve individual PSC verification details.

get_psc_individual_full_record

Retrieve full PSC record for an individual.

get_psc_corporate_entity_beneficial_owner

Retrieve corporate entity PSC beneficial owner details.

get_psc_legal_person_beneficial_owner

Retrieve legal person PSC beneficial owner details.

get_psc_super_secure

Retrieve super-secure PSC details.

get_psc_super_secure_beneficial_owner

Retrieve super-secure PSC beneficial owner details.