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UK Data API – Company Search
x402
UK Data API – Company Search is a paid API for AI agents from uk-data.agent-fee-check.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-12).
Search for UK companies by name using Companies House data, returning registration details, status, type, and registered office address.
Price / call$0.003
Success—
StatusUnknown
How this service works
UK public data for AI agents, one origin, pay per call: a one-call postcode report, street crime, live flood warnings, property sales and the House Price Index, food hygiene ratings, MP lookup, NHS GPs, pharmacies and dentists, Companies House checks and search, UK working days and bank holidays, and the cheapest card machine provider. Official sources, attribution in every answer, free preview in every 402, failed requests never charged.
Output
Returns a JSON array of matching companies, each with company name, company number, company type (e.g. ltd, plc), active/ceased status, cessation date if applicable, incorporation date, and registered office address. Attribution to Companies House is included in the response.
Example use cases
Due diligence on a supplier
“I'm about to sign a contract with a company called Hartley & Sons Distribution Ltd — can you look them up on Companies House and confirm they're still active and show me their registered address?”
Journalist verifying company existence
“I'm investigating a business called Green Planet Ventures — can you search for it in the UK company register and tell me if it exists, what type of company it is, and when it was incorporated?”
Sales prospecting for a UK business
“We want to reach out to companies with 'renewable energy' in their name — can you search Companies House for that term and list the active ones with their registration numbers and addresses?”
Technical details
Endpoint
GEThttps://uk-data.agent-fee-check.workers.dev/company-search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to search UK companies by name via Companies House data in a single pay-per-call API without setting up a full Companies House API key. Ideal for agents needing quick due diligence, supplier verification, or business lookup within a broader UK data workflow. Prefer over direct Companies House API when you want attribution included, pay-per-use pricing, and unified access alongside other UK data types.
Side effects
- No results found for obscure or misspelled company names
- Payment required (402) if no x402 payment is provided — a free preview sample is returned
- Rate limiting or upstream Companies House API unavailability
- Query parameter 'q' missing returns a 400 or error response
- Very common search terms may return large result sets with limited filtering
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"results": [
{
"type": "plc",
"status": "active",
"ceased_on": null,
"company_name": "TESCO PLC",
"company_number": "00445790",
"incorporated_on": "1947-11-27",
"registered_office": "Tesco House, Shire Park, Kestrel Way, Welwyn Garden City, United Kingdom, AL7 1GA"
},
{
"type": "ltd",
"status": "active",
"ceased_on": null,
"company_name": "KFORD TYRES (GORNAL) LTD",
"company_number": "09384423",
"incorporated_on": "2015-01-12",
"registered_office": "2 Dawley Brook Road, Kingswinford, England, DY6 7BD"
}
]
}
}Tags
x402
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