An empty items list is never the same as "no owner": ownership_status and the filed PSC st
An empty items list is never the same as "no owner": ownership_status and the filed PSC statements/exemptions explain why the register discloses none. Returns the persons with significant control (PSCs) for a UK company — the individuals, entities or legal persons that own or control it — each nature of control carrying the register code and its official text, with dates and public identification. The UK statutory beneficial-ownership (UBO) record. Use when: Who owns this UK company?
8000 (raw units)
price
1
calls / 30d
1
unique payers
2026-08-27
updated
Provider
api.eckari.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x9d6b6fdB04040a55d58B24ff4C90C08cf6083C8f",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "8000",
"maxTimeoutSeconds": 60
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"pathParams": {
"company_number": "00445790"
},
"queryParams": {},
"type": "http"
},
"output": {
"example": {
"data": {
"active_count": 0,
"active_statement_count": 0,
"ceased_count": 0,
"company_number": "00445790",
"exemptions": [
{
"description": "This is a traded, DTR5 issuing company. Therefore it may be exempt from updating its PSC information.",
"exempt_from": "2017-06-07",
"exempt_to": "2023-02-02",
"exemption_type": "disclosure-transparency-rules-chapter-five-applies",
"is_current": false
},
{
"description": "The company has been or is exempt from the requirement to obtain information of its PSC, as it has voting shares admitted to trading on a UK regulated market.",
"exempt_from": "2018-06-18",
"exempt_to": null,
"exemption_type": "psc-exempt-as-trading-on-uk-regulated-market",
"is_current": true
}
],
"items": [],
"ownership_status": "exempt_listed_company",
"page": {
"has_more": false,
"limit": 10,
"next_offset": null,
"offset": 0,
"returned": 0,
"total": 0
},
"query": {
"include_ceased": false
},
"statements": []
},
"meta": {
"capability": "company.uk.owners",
"freshness": "live",
"source": "companies_house",
"version": "3.0.0"
}
},
"type": "json"
}
},
"routeTemplate": "/v1/companies/uk/:company_number/owners",
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"pathParams": {
"additionalProperties": false,
"properties": {
"company_number": {
"description": "Companies House company number. Accepted shapes are the register's own — 1-8 digits (zero-padded to 8, e.g. 445790 → 00445790), one letter + 7 digits (R0000001), two letters + 6 digits (SC002180, NI000001, OC123456, OE000001), or the registered-society suffix forms (two letters + 5 digits + 1 letter; two letters + 4 digits + 2 letters). Case-insensitive; surrounding whitespace is ignored (which is why maxLength is 10); internal spaces and punctuation are not accepted. Any other value (for example PROBE) is rejected as INVALID_INPUT before payment and before any upstream call.",
"maxLength": 10,
"minLength": 1,
"pattern": "^\\s*(?:[0-9]{1,8}|[A-Za-z][0-9]{7}|[A-Za-z]{2}[0-9]{6}|[A-Za-z]{2}[0-9]{5}[A-Za-z]|[A-Za-z]{2}[0-9]{4}[A-Za-z]{2})\\s*$",
"type": "string"
}
},
"required": [
"company_number"
],
"type": "object"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"include_ceased": {
"description": "Include PSCs whose control has ceased. Default false.",
"type": "boolean"
},
"limit": {
"description": "Maximum PSCs to return per page (1-100). Default 10. Eckari reads up to three register pages of 100 entries to fill this after the ceased filter is applied; if the limit is still unmet, page.has_more is true and page.next_offset says where to resume.",
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"offset": {
"description": "Zero-based index into the register's own PSC list (not into the filtered result). Pass back page.next_offset from the previous response to page.",
"maximum": 10000,
"minimum": 0,
"type": "integer"
}
},
"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"
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"id": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[a-zA-Z0-9_-]+$",
"type": "string"
},
"required": {
"type": "boolean"
}
},
"required": [
"required"
],
"type": "object"
}
}
}Use it
curl
curl "https://api.eckari.com/v1/companies/uk/:company_number/owners" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://api.eckari.com/v1/companies/uk/:company_number/owners");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://api.eckari.com/v1/companies/uk/:company_number/owners")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/4330.json, and this resource appears in /discovery/resources and /discovery/search.