latinfoAPI evidence index
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United Kingdom · lookupCompanyNumberGb
OpenAPI

Lookup by Company number (United Kingdom)

GET https://api.latinfo.dev/gb/companies-house/register/company-number/{companyNumber}

Returns basic company identity, status, type, incorporation date and SIC fields from the Companies House monthly all-live-companies snapshot. LP/NL partnerships without separate legal personality are excluded.

EV
Evidence-first response

Latinfo identifies the originating government dataset and preserves source evidence and freshness when the publisher exposes them. Verify material decisions with that institution.

Authentication required. REST requests use a Latinfo API key. The interactive console builds the authorization header and does not store the key.

Parameters

companyNumberstringpathrequired

Eight-character Companies House Company number

Example: 00445790

Request example

curl https://api.latinfo.dev/gb/companies-house/register/company-number/00445790 \
  -H "Authorization: Bearer $LATINFO_API_KEY"

Responses

200Legal entity found
Content-Type: application/json
400Invalid Company number format
No response body documented.
401Missing or invalid API key
No response body documented.
404Company number not found or outside legal-entity scope
No response body documented.

Example JSON

{
  "legal_name": "TESCO PLC",
  "status": "Active",
  "company_category": "Public Limited Company",
  "incorporation_date": "27/11/1947",
  "sic_code_1": "47110 - Retail sale in non-specialised stores with food, beverages or tobacco predominating",
  "sic_code_2": "string",
  "sic_code_3": "string",
  "sic_code_4": "string"
}

Provenance and limitations

Coverage varies by country and public source. A missing field is not evidence that the underlying fact does not exist. Public registries may be delayed or contain source errors; inspect the returned evidence and source date before relying on a result.

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