UK persons with significant control (PSC register) live from Companies House, fo
UK persons with significant control (PSC register) live from Companies House, for KYB and group-structure checks: LEGAL-ENTITY controllers only (corporate entities, legal persons) with natures of control (ownership/voting bands), notification dates and register identification, plus official PSC statements. Natural-person controllers are COUNTED, never named (GDPR, CJEU C-798/24, since 2026-09-19). Ceased PSCs excluded by default (inclure_cesses=true adds them).
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.sirenic.eu/v1/eu/entreprise/GB/:company_number/beneficiaires-effectifs
| Category | Company and compliance |
|---|---|
| Provider host | api.sirenic.eu |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 6 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.02 | 884 ms |
Example input (from the provider)
{
"method": "GET",
"pathParams": {
"company_number": "00446915"
},
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"properties": {
"company_number": {
"description": "Companies House company number, leading zeros required (00446915). Unknown number returns 404, payment cancelled.",
"type": "string"
}
},
"required": [
"company_number"
],
"type": "object"
},
"queryParams": {
"properties": {
"inclure_cesses": {
"description": "Set to \"true\" to add ceased PSCs in `beneficiaires_cesses` (with their cesse_le). Omitted or any other value: ceased PSCs are excluded.",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}