This server provides comprehensive UK due diligence tools across five free, official public registers — Companies House, Charity Commission, HM Land Registry, The Gazette, and HMRC VAT — with no paywalls.

Company Investigations

• Search companies by name/keyword with filters for status and type

• Retrieve full profiles including status, filing compliance, overdue accounts, and outstanding charges

• List officers/directors with appointment dates and a risk flag for those holding 10+ active appointments (nominee/phoenix director signal)

• Retrieve beneficial ownership (PSC) chains, flagging offshore corporate owners

Disqualified Directors

• Search for disqualified individuals by name

• Retrieve full disqualification records including reason, Act/section cited, period, and associated companies

Charity Checks

• Search the Charity Commission register by name/keyword

• Retrieve full charity profiles including trustees, income/expenditure, insolvency flags, and governing document

Property Transactions

• Search HM Land Registry Price Paid Index by postcode/address for recent sale transactions (England & Wales only)

Insolvency Notices

• Search The Gazette for corporate insolvency notices (winding-up orders, administration, liquidation, etc.) filtered by date or type

• Fetch the full legal text of any specific notice

VAT Validation

• Validate UK VAT numbers against HMRC, returning trading name and address; discrepancies with Companies House are flagged as a due diligence signal

Unified Search & Fetch

• Search all registers simultaneously in parallel and retrieve full structured records using prefixed IDs

Predefined Workflow Prompts

• due_diligence: full company check (profile, officers, PSC, gazette, disqualification)

• charity_due_diligence: charity profile + insolvency check

• director_check: individual disqualification status check

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

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"]
 }
 }
}

Run due diligence on Carillion PLC

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