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UK Companies House Registry Lookup
x402
UK Companies House Registry Lookup is a paid API for AI agents from companies.use.x402atlas.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-12).
Looks up a UK company by registration number or name in the official Companies House register, returning legal details in a normalized schema.
Price / call$0.05
Success—
StatusUnknown
How this service works
UK company lookup in the official Companies House register by company number or company name. Returns legal name, company status, company type, incorporation date, registered office address and SIC codes in a schema shared across countries.
Output
Returns a normalized JSON object containing: the echoed query, ISO country code (GB), registry name (Companies House), match count, and an array of matched companies each with legal name, registration number, normalized status (active/inactive/unknown), legal form, incorporation date, registered office address (street, city, postal code, country code), SIC activity codes, and website if available.
Example use cases
Due diligence on a UK supplier
“I'm about to sign a contract with a UK supplier called Tesco PLC — can you pull their Companies House record and confirm they're still active, when they were incorporated, and what their registered address is?”
Verify a company number from an invoice
“I've received an invoice quoting UK company number 00445790 — can you check Companies House and tell me the legal name and current status of that company?”
Enrich a CRM with UK company data
“I have a UK business called Barclays Bank in my CRM — can you look it up in Companies House and give me their official registration number, legal form, registered office address, and SIC codes so I can update the record?”
Technical details
Endpoint
GEThttps://companies.use.x402atlas.com/uk-company-data?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative, official UK company data from Companies House — particularly when verifying legal existence, checking active status, or retrieving the official registered address and company number. Prefer this over generic business search APIs when regulatory compliance, due diligence, or KYC accuracy is required. It uses a normalized cross-country schema, making it easy to combine with sibling endpoints for other European registries.
Side effects
- No matching company found — returns count:0 and an empty companies array with a note
- Invalid or malformed company number format — may return zero results
- Company name query returns multiple matches — all are returned but caller must disambiguate
- Companies House API downtime — upstream service unavailable error
- Query string too long (over 200 characters) — rejected by schema validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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