Uk Due Diligence Mcp

uk-due-diligence-mcp

Tools across five UK public registers. Zero paywalls. All official APIs.

Give an agent a company name and it pulls corporate status, filing compliance, director networks, beneficial ownership chains, disqualification checks, insolvency notices, VAT validation, and property transactions.

Every data source is a legally-mandated register with a free official API.

[](https://pypi.org/project/uk-due-diligence-mcp/) [](https://safeskill.dev/scan/paulieb89-uk-due-diligence-mcp) [](https://glama.ai/mcp/connectors/io.github.paulieb89/uk-due-diligence-mcp) [](https://smithery.ai/servers/bouch/uk-due-diligence) [](https://vscode.dev/redirect/mcp/install?name=uk-due-diligence&config=%7B%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fuk-due-diligence-mcp.fly.dev%2Fmcp%22%7D) [](https://insiders.vscode.dev/redirect/mcp/install?name=uk-due-diligence&config=%7B%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fuk-due-diligence-mcp.fly.dev%2Fmcp%22%7D&quality=insiders) [](https://cursor.com/en/install-mcp?name=uk-due-diligence&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vdWstZHVlLWRpbGlnZW5jZS1tY3AuZmx5LmRldi9tY3AifQ==)

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Data Sources

| Register | API | Auth | |----------|-----|------| | Companies House | api.company-information.service.gov.uk | API key (free) | | Charity Commission | api.charitycommission.gov.uk | API key (free) | | HMLR Land Registry | landregistry.data.gov.uk (SPARQL + REST) | None | | The Gazette | thegazette.co.uk/all-notices (Linked Data) | None | | HMRC VAT | api.service.hmrc.gov.uk | None |

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Tools

| Tool | Register | Description | |------|----------|-------------| | company_search | Companies House | Search by name/keyword with status/type filters | | company_profile | Companies House | Full profile: status, filing compliance, charges | | company_officers | Companies House | Directors with high-appointment-count risk flag | | company_psc | Companies House | Beneficial owners, PSC chain, offshore flags | | disqualified_search | Companies House | Search disqualified directors by name | | disqualified_profile | Companies House | Full disqualification record, period, Act, companies | | charity_search | Charity Commission | Search by name, filter by registration status | | charity_profile | Charity Commission | Full record: trustees, finances, governing doc | | land_title_search | HMLR | Property ownership via SPARQL PPI query | | gazette_insolvency | The Gazette | Corporate insolvency notices (codes 2441-2460) | | gazette_notice | The Gazette | Full legal wording of a specific insolvency notice | | vat_validate | HMRC VAT | Trading name + address as registered for VAT | | search | All registers | Fan-out search across all registers — returns IDs for ChatGPT deep research | | fetch | All registers | Fetch a structured record by ID returned from search |

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Prompts

Three workflow prompts orchestrate multi-step investigations. Available via get_prompt on tool-only clients (ChatGPT) and natively on protocol-aware clients (Claude, Inspector).

| Prompt | Description | |--------|-------------| | due_diligence | Full DD check — company, officers, PSC, gazette, disqualification | | charity_due_diligence | Charity profile + insolvency check | | director_check | Disqualification status check for an individual |

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Connect

Hosted (no install)

{
  "mcpServers": {
    "uk-due-diligence": {
      "type": "http",
      "url": "https://uk-due-diligence-mcp.fly.dev/mcp"
    }
  }
}

Local (uvx)

export CH_API_KEY=your_key
export CHARITY_API_KEY=your_key

{
  "mcpServers": {
    "uk-due-diligence": {
      "type": "stdio",
      "command": "uvx",
      "args": ["uk-due-diligence-mcp"]
    }
  }
}

API Keys

| Key | Where to get it | |-----|----------------| | CH_API_KEY | developer.company-information.service.gov.uk — free | | CHARITY_API_KEY | api-portal.charitycommission.gov.uk — free |

HMLR, Gazette, and HMRC VAT require no API key.

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Demo

Run due diligence on Carillion PLC

The agent calls company_search to resolve the company number, then company_profile, company_officers, company_psc, and gazette_insolvency — reasoning across all five registries to surface risk signals.

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Project Structure

uk-due-diligence-mcp/
├── server.py           # FastMCP init, tool registration, transport config
├── companies_house.py  # company_search, company_profile, company_officers, company_psc
├── disqualified.py     # disqualified_search, disqualified_profile
├── charity.py          # charity_search, charity_profile
├── land_registry.py    # land_title_search (SPARQL + REST)
├── gazette.py          # gazette_insolvency (JSON-LD, notice codes 2441-2460)
├── hmrc_vat.py         # vat_validate
├── http_client.py      # Shared httpx clients, retry backoff, error formatting
├── inputs.py           # Pydantic v2 input models
├── fly.toml
├── Dockerfile
├── pyproject.toml
└── .env.example

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Technical Notes

The Gazette API

REST+RDF linked-data pattern. Corporate insolvency notice codes span 2441-2460. The read API is unauthenticated; auth is write-only (for placing notices).

HMLR Land Registry

Free endpoint at api.landregistry.data.gov.uk. Returns RDF/Turtle by default — the SPARQL endpoint is used for Price Paid Index queries. Covers England and Wales only.

High-Appointment-Count Signal

Directors with 10+ other active appointments are flagged. A director on 40+ companies is a common pattern in nominee director operations and phoenix company structures.

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Licence

MIT

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: paulieb89
• Source: paulieb89/uk-due-diligence-mcp
• License: MIT
• Homepage: https://bouch.dev/guides/add-mcp-server

Install and usage instructions live in the source repository linked above.