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Sirenic UK Beneficial Owners (PSC) Lookup
x402
Sirenic UK Beneficial Owners (PSC) Lookup is a paid API for AI agents from api.sirenic.eu, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Retrieves live UK beneficial ownership data (Persons with Significant Control) for a given Companies House company number, including individual and corporate PSCs with control types and notification dates.
Price / call$0.02
Success—
StatusUnknown
How this service works
UK beneficial owners (PSC, persons with significant control) live from Companies House for AML, KYB and compliance: individual and corporate-entity PSCs with natures of control (ownership/voting bands), notification dates, plus official PSC statements. Ceased PSCs excluded by default (inclure_cesses=true adds them with their ceased date). Beyond French-registry parity — France exposes no open UBO register. Month+year of birth only, no addresses. Open Government Licence v3.0 (Companies House).
Output
Returns a structured object containing active PSC records for the company — individual persons and corporate entities listed as having significant control — each with their nature of control (ownership and voting bands such as 25-50%, 50-75%, 75%+), notification date, and month/year of birth (individuals only, no addresses). Optionally includes ceased PSCs in a separate array with their cessation date when inclure_cesses=true. Also includes any official PSC statements filed at Companies House.
Example use cases
KYC supplier due diligence check
“Before we onboard this UK supplier, can you pull the beneficial ownership data for their Companies House number 07890456? I need to know who ultimately controls the company and what kind of ownership or voting stake they hold.”
Investment target ownership mapping
“We're looking at acquiring a UK firm registered as company number 03142857 — can you get their full PSC register including any corporate entities that hold a controlling stake and when they were notified?”
Compliance audit with historical PSC data
“For our AML compliance review of UK company 00998765, can you fetch all beneficial owners including any that have since ceased, so I can see the complete historical ownership picture including when those PSCs stepped down?”
Technical details
Endpoint
GEThttps://api.sirenic.eu/v1/eu/entreprise/GB/:company_number/beneficiaires-effectifsWhen to prefer
Use this endpoint when you need official, live UK beneficial ownership data sourced directly from Companies House for KYC, AML, due diligence, or compliance workflows. It is the only open-data UBO register for the UK — unlike France, the UK has a publicly accessible PSC register. Prefer this over scraping Companies House directly for structured, low-cost, normalized output. Use it when you need natures of control detail (ownership/voting bands) and want ceased PSCs optionally included.
Side effects
- Unknown or invalid company number returns 404 and the payment is cancelled
- Company exists but has filed no PSC records returns an empty list
- Malformed company number (missing leading zeros) may return 404
- Rate limiting or upstream Companies House API outage may cause 5xx errors
- Companies with complex group structures may have corporate PSCs requiring further recursive lookups
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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